noun
                                                a series of things depending on each other as if linked together
                                                                                                Synonyms
                                                
                                                
                                                                                                Examples
                                                
                                                                                                        - the chain of command
- a complicated concatenation of circumstances
 
                                                                                        
                                                noun
                                                (chemistry) a series of linked atoms (generally in an organic molecule)
                                                                                                Synonyms
                                                
                                                                                                                                                                        chemical chain
                                                                                                                                                            
                                                
                                                                                             
                                                                                        
                                                noun
                                                a series of (usually metal) rings or links fitted into one another to make a flexible ligament
                                                
                                                                                             
                                                                                        
                                                noun
                                                (business) a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one ownership
                                                
                                                                                             
                                                                                        
                                                noun
                                                anything that acts as a restraint
                                                
                                                                                             
                                                                                        
                                                                                        
                                                noun
                                                British biochemist (born in Germany) who isolated and purified penicillin, which had been discovered in 1928 by Sir Alexander Fleming (1906-1979)
                                                                                                Synonyms
                                                
                                                                                                                                                                        Ernst Boris Chain
                                                                                                                                                                                                                                Sir Ernst Boris Chain
                                                                                                                                                            
                                                
                                                                                             
                                                                                        
                                                noun
                                                a series of hills or mountains
                                                                                                Synonyms
                                                
                                                                                                                                                                        range
                                                                                                                                                                                                                                mountain range
                                                                                                                                                                                                                                range of mountains
                                                                                                                                                                                                                                mountain chain
                                                                                                                                                                                                                                chain of mountains
                                                                                                                                                             
                                                
                                                                                                Examples
                                                
                                                                                                        - the valley was between two ranges of hills
- the plains lay just beyond the mountain range
 
                                                                                        
                                                noun
                                                a linked or connected series of objects
                                                
                                                                                                Examples
                                                
                                                                                                        - a chain of daisies
 
                                                                                        
                                                noun
                                                a necklace made by stringing objects together
                                                                                                Synonyms
                                                
                                                
                                                                                                Examples
                                                
                                                                                                        - a string of beads
- a strand of pearls
 
                                                                                        
                                                verb
                                                connect or arrange into a chain by linking
                                                
                                                                                             
                                                                                        
                                                verb
                                                fasten or secure with chains
                                                
                                                                                                Examples
                                                
                                                                                                        - Chain the chairs together