Definitions for afterpieceˈæf tərˌpis, ˈɑf-
Random House Webster's College Dictionary
af•ter•pieceˈæf tərˌpis, ˈɑf-(n.)
a short comic piece performed after a featured play.
Origin of afterpiece:
a brief dramatic piece (usually comic) presented after a play
a piece performed after a play, usually a farce or other small entertainment
the heel of a rudder