frenulum
noun
/ˈfriː.njʊl.əm/
,
/ˈfrɛn.jəl.əm/
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- (anatomy) A small fold or ridge of tissue that supports or restrains the motion of the part to which it is attached, in particular a fold of skin beneath the tongue, or between the lip and the gum.
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filet,
frein
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