Lewis & Short

spŭrĭum, ii, n. [σπορά, generation].

  1. I. = pudendum muliebre, acc. to Isid. Orig. 9, 5, 24; cf. Plut. Quaest. Rom. 103.
  2. II. Transf., a marine animal of a similar shape, App. Mag. p. 297, 11.