Definition of vaginule in English:

vaginule

Pronunciation /ˈvadʒɪnjuːl/

noun

Botany
  • In mosses: a sheath at the base of the seta (capsule-bearing stalk).

Origin

Early 19th century; earliest use found in Samuel Frederick Gray (1766–1828), naturalist and pharmacologist. Either (i) from vaginula.