lip studn. an ornamental stud worn through a pierced lip.
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1886 Amer. Naturalist20 598 The characteristic lip-stud of the western Eskimos, of which a pair is now universally worn in the under lip, one at each corner of the mouth.
2002 V. Coren & C. SkeltonOnce more, with Feeling li. 316 They've even got the same lip stud.