Main Entry: plu·mule

Pronunciation: \ˈplü-(ˌ)myül\

Function: noun

Etymology: New Latin plumula, from Latin, diminutive of pluma small soft feather — more at fleece

Date: circa 1741

1 : the primary bud of a plant embryo usually situated at the apex of the hypocotyl and consisting of leaves and an epicotyl
2 : a down feather

[plumule illustration]