noun / verb
crumb
KRUM/krʌm/
A very small broken piece.
A small crumb sits beside the torn edge of the bread.

Etymology
Old English cruma already meant a small fragment of bread or other food. The modern sense preserves that concrete idea of a morsel or broken-off piece.
In context
They've a simply enormous cake. You must go and look at it. It'll disappear to the last crumb.
More examples
- She brushes cookie crumbs off the table.
- The good news gives us a crumb of hope.
- He crumbs the fish before frying it.
Forms
crumb · crumbs · crumbed · crumbing
crumbly adjective — Easily breaking into small, loose pieces.