\Cus"tard\ (k?s"t?rd), n. [Prob. the same word as OE.
crustade, crustate, a pie made with a crust, fr. L. crustatus
covered with a crust, p. p. of crustare, fr. crusta crust;
cf. OF. croustade pasty, It. crostata, or F. coutarde. See
{Crust}, and cf. {Crustated}.]
A mixture of milk and eggs, sweetened, and baked or boiled.
{Custard apple} (Bot.), a low tree or shrub of tropical
   America, including several species of Anona ({A.
   squamosa}, {reticulata}, etc.), having a roundish or ovate
   fruit the size of a small orange, containing a soft,
   yellowish, edible pulp.
{Custard coffin}, pastry, or crust, which covers or coffins a
   custard [Obs.] --Shak.