The Collaborative International Dictionary of English v.0.48:

Ascocarp \As"co*carp\, n. [Gr. 'asko`s a bladder + karpo`s
   fruit.] (Bot.)
   In ascomycetous fungi, the spherical, discoid, or cup-shaped
   body within which the asci are collected, and which
   constitutes the mature fructification. The different forms
   are known in mycology under distinct names. Called also
   spore fruit.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

ascocarp
    n 1: mature fruiting body of an ascomycetous fungus