‖n.; pl. Spermathecae [ NL., from Gr. &unr_;&unr_;&unr_;&unr_; seed + &unr_;&unr_;&unr_;&unr_; case, or receptacle. ] (Zool.) A small sac connected with the female reproductive organs of insects and many other invertebrates, serving to receive and retain the spermatozoa. [ 1913 Webster ]