The Collaborative International Dictionary of English v.0.48:
Gynobase \Gyn"o*base\ (j[i^]n"[-o]*b[=a]s), n. [Gr. gynh` a woman, female + E. base.] (Bot.) A dilated base or receptacle, supporting a multilocular ovary. [1913 Webster]WordNet (r) 3.0 (2006):
gynobase n 1: the enlarged receptacle in which the pistil is borne