crumb

Từ điển American Heritage Dictionary 4th

crumb (krŭm)n.
1. A very small piece broken from a baked item, such as a cookie, cake, or bread.
2. A small fragment, scrap, or portion:
eraser crumbs; not a crumb of kindness for you.
3. The soft inner portion of bread.
4. Slang. A contemptible, untrustworthy, or loathsome person.v. crumbed, crumb·ing, crumbsv. tr.
1. To break into very small pieces; crumble.
2. To cover or prepare with very small pieces of bread.
3. To brush (a table or cloth) clear of small scraps or fragments of food.v. intr.
To break apart in very small pieces:
a solid cake that won't crumb. [Middle English crome, from Old English cruma.]