The word crumb is used in several ways:
- a small particle of food or other material
- the inner part of bread, which is softer than the crust
- the film Crumb
- the artist R. Crumb
- the composer George Crumb
- a slang word for someone who is hateful, contemptible or untrustworthy
- Crumbs!, an old-fashioned expression of surprise
- as a surname