noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A nut with wing-like projections to provide leverage in turning with thumb and forefinger.
2. 2
   a threaded nut with winglike projections for thumb and forefinger leverage in turning wordnet

Synonyms

All synonyms

thumbnutwing nutwing screwwing-nutwingnuts

Etymology

From butterfly + nut.