Definition of frenulum noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈfrenjələm//
, also BrE//ˈfriːnjələm//
; NAmE NAmE//ˈfrenjələm//
(British English also fraenulum
BrE BrE//ˈfriːnjələm//
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a small fold of skin that prevents an organ from moving too much, for example the fold of skin under the tongue Word Originearly 18th cent.: modern Latin, diminutive of Latin frenum ‘bridle’.
See the Oxford Advanced American Dictionary entry: frenulum