Pronunciation: (krus'tē), [key]
—adj., crust•i•er, crust•i•est.
1. having a crisp or thick crust: a loaf of crusty French bread.
2. of the nature of or resembling a crust.
3. harsh; surly; rude: a crusty remark.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.