RhymeZone: sterigma definitions

Definitions of sterigma:

noun: (mycology) A slim projecting part of the basidium of some species of fungi that carries the basidiospore.
noun: (botany) A woody projection from the tip of the leaf base in certain conifers (Picea and Tsuga).
noun: (entomology) Part of the genitalia of moths.

(Definitions from Wiktionary)