Definition from Wiktionary, the free dictionary
Alteration of croustade.
- (uncountable) A type of sauce made from milk and eggs (and usually sugar, and sometimes vanilla or other flavourings) and thickened by heat, served hot poured over desserts, as a filling for some pies and cakes, or cold and solidified; also used as a base for some savoury dishes, such as quiches.
- (countable) Any particular variety of custard.
countable: any variety of custard