The Collaborative International Dictionary of English v.0.48:

Syncarp \Syn"carp\, n. [NL. syncarpium. See Syncarpous.]
   (Bot.)
   A kind of aggregate fruit in which the ovaries cohere in a
   solid mass, with a slender receptacle, as in the magnolia;
   also, a similar multiple fruit, as a mulberry.
   [1913 Webster]

WordNet (r) 3.0 (2006):

syncarp
    n 1: fruit consisting of many individual small fruits or drupes
         derived from separate ovaries within a common receptacle:
         e.g. blackberry; raspberry; pineapple [syn: aggregate
         fruit, multiple fruit, syncarp]