frenulum
Concise Oxford English Dictionary © 2008 Oxford University Press:
frenulum /ˈfriːnjʊləm/
▶noun
- 1 Anatomy a small fold or ridge of tissue, in particular a fold of skin beneath the tongue or between the lip and the gum.
- 2 Entomology a bristle or row of bristles on an insect's hindwing which keeps it in contact with the forewing.
– origin C18: mod. L., dimin. of L. frenum ‘bridle’.
'frenulum' also found in these Oxford entries:
