The Collaborative International Dictionary of English v.0.48:

Antepast \An"te*past\, n. [Pref. ante- + L. pastus pasture,
   food. Cf. Repast.]
   A foretaste.
   [1913 Webster]

         Antepasts of joy and comforts.           --Jer. Taylor.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

22 Moby Thesaurus words for "antepast":
   antipasto, aperitif, appetizer, canape, course, cover, dessert,
   dish, entree, entremets, foretaste, help, helping, place, plate,
   portion, prelibation, second helping, service, serving,
   smorgasbord, whet