sphragis

noun2

1. •
   A mating plug in the genital opening of a female, formed from a waxy secretion deposited by a male during mating.

   • Bert first began studying sphragides in the Australian Big Greasy. The male, patterned in red, white, and black, is larger than the female and violent in his mating. — 2009
2. •
   Synonym of sphragide.

   • The best Siopic red ochre is found on the island of Lemnos, and is called sphragis. — 2012