crusta

noun3

1. •
   A crust or shell.
2. •
   A cocktail (typically of brandy, orange liqueur, bitters, and lemon juice and peel) distinguished by a sugared crust on the rim of the glass.

   • Crusta is made the same as a fancy cocktail, with a little lemon juice and a small lump of ice added. — 1862
3. •
   A gem engraved, or a plate embossed in low relief, for inlaying a vase or other object.