noun
                                                a porous mass of interlacing fibers that forms the internal skeleton of various marine animals and usable to absorb water or any porous rubber or cellulose product similarly used
                                                
                                                                                             
                                                                                        
                                                noun
                                                someone able to acquire new knowledge and skills rapidly and easily
                                                                                                Synonyms
                                                
                                                                                                                                                                        quick study
                                                                                                                                                            
                                                
                                                                                                Examples
                                                
                                                                                                        - she soaks up foreign languages like a sponge
 
                                                                                        
                                                noun
                                                a follower who hangs around a host (without benefit to the host) in hope of gain or advantage
                                                                                                Synonyms
                                                
                                                
                                                                                             
                                                                                        
                                                noun
                                                primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework
                                                                                                Synonyms
                                                
                                                
                                                                                                Examples
                                                
                                                                                                        - usually occurs in sessile colonies
 
                                                                                        
                                                verb
                                                wipe with a sponge, so as to clean or moisten
                                                
                                                                                             
                                                                                        
                                                verb
                                                ask for and get free
                                                                                                Synonyms
                                                
                                                
                                                                                                Examples
                                                
                                                                                                        - be a parasite
 
                                                                                        
                                                verb
                                                erase with a sponge
                                                
                                                                                                Examples
                                                
                                                                                                        - as of words on a blackboard
 
                                                                                        
                                                verb
                                                soak up with a sponge
                                                
                                                                                             
                                                                                        
                                                verb
                                                gather sponges, in the ocean