Definition of Crumb

• 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"
• 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"
• small piece of e.g. bread or cake