from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Anatomy A small frenum.
- n. Entomology A bristly structure on the hind wings of certain moths and butterflies that holds the forewings and hind wings together during flight.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A small fold of tissue that prevents an organ in the body from moving too far.
from The Century Dictionary and Cyclopedia
- n. In anatomy, same as frenum or frenula.
- n. In lepidopterous insects, a strong, elastic, sometimes double bristle on the upper edge of the secondary wing, near its base. Also spelled frænulum.
New Latin frēnulum, diminutive of Latin frēnum, bridle; see frenum.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin frēnulum, diminutive of frēnum. (Wiktionary)