noun
1 on a loaf of bread, pie, etc.
ADJECTIVE
▪ thick , thin
▪ flaky ( esp. AmE )
▪ bread , pastry , pie , pizza
PHRASES
▪ a ~ of bread
▪
We saved a few ~s of bread for the birds.
2 hard layer on the outside of sth
ADJECTIVE
▪ thick , thin
VERB + CRUST
▪ form
▪
The mud had formed a thick ~ on the surface of the road.
CRUST + VERB
▪ form
▪
Put the lid on, or a ~ will form on the paints.
PREPOSITION
▪ ~ of
▪
a thin ~ of ice
PHRASES
▪ the earth's ~