crumb in WordNet English dictionary

1. a person who is deemed to be despicable or contemptible
   "only a rotter would do that"; "kill the rat"; "throw the bum out"; "you cowardly little pukes!"; "the British call a contemptible person a `git'"
   rotter  dirty dog  rat  skunk  stinker  stinkpot  bum  puke  crumb  lowlife  scum bag  so-and-so  git 
   
2. small piece of e.g. bread or cake
   crumb 
   
3. a very small quantity of something
   "he gave only a crumb of information about his plans"; "there were few crumbs of comfort in the report"
   crumb 
   

1. remove crumbs from
   "crumb the table"
   crumb 
   
2. break into crumbs
   crumb 
   
3. coat with bread crumbs
   "crumb a cutlet"
   crumb