[ fren-yuh-luhm ]

noun,plural fren·u·la [fren-yuh-luh]. /ˈfrɛn yə lə/.
  1. Anatomy, Zoology. a small frenum.

  2. Entomology. a strong spine or group of bristles on the hind wing of many butterflies and moths, projecting beneath the forewing and serving to hold the two wings together in flight.

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Origin of frenulum

From New Latin, dating back to 1890–95; see origin at frenum, -ule

Other words from frenulum

  • fren·u·lar, adjective

Words Nearby frenulum Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use frenulum in a sentence

British Dictionary definitions for frenulum


/ (ˈfrɛnjʊləm) /

nounplural -la (-lə)
  1. a strong bristle or group of bristles on the hind wing of some moths and other insects, by which the forewing and hind wing are united during flight

  2. a small fraenum

Origin of frenulum

C18: New Latin, diminutive of Latin frēnum bridle

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012