gynæcophore

English compound: gynæc- +‎ -o- +‎ -phore: originates from Ancient Greek conjunction: γῠναικο- (gunaiko-, “female”) plus -φορος (-phoros, “bearing”).

gynæcophore (plural gynæcophores)

1. (zoology) Receptacle in the bodies of certain male animals in which females may be contained.
   • 1877, Thomas Henry Huxley, A manual of the anatomy of invertebrated animals‎, page 202:

     Diœcious Trematodes are very rare, the most important being the formidable Bilharzia, the male of which is the larger and retains the female in a gyncæcophore, or canal, which is formed by the infolding of the margins of the concave side of the body.

• 1889, William Dwight Whitney, The Century dictionary and cyclopedia, page 2667.