RhymeZone: crusta definitions

Definitions of crusta:

noun: A crust or shell.
noun: A gem engraved, or a plate embossed in low relief, for inlaying a vase or other object.
noun: A cocktail (typically of brandy, orange liqueur, bitters, and lemon juice and peel) distinguished by a sugared crust on the rim of the glass.

(Definitions from Wiktionary)