lip

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Related to lip biting: cheek biting
See: border, edge, margin
References in periodicals archive ?
As Kareem began to exhibit a number of nervous behaviours including eye twitching, lip biting and bed-wetting, Farah turned to a psychiatrist for help.
Mucocele developed mostly in the lower lip mainly due to severe lip biting.
Other signs to watch out for includesudden lip biting or pursed lips.