
1) Facial piercing 2) Lip ornament 
Found on 
https://www.crosswordclues.com/clue/labret

 A labret is one form of body piercing. Taken literally, it is any type of adornment that is attached to the lip (labrum). However, the term usually refers to a piercing that is below the bottom lip, above the chin. It is sometimes referred to as a `tongue pillar.` ==Pronunciation== The traditional pronunciation of labret in anthropology is t {re.....
Found on 
http://en.wikipedia.org/wiki/Labret

lip ornament
Found on 
http://phrontistery.info/l.html

• (n.) A piece of wood, shell, stone, or other substance, worn in a perforation of the lip or cheek by many savages.
Found on 
http://thinkexist.com/dictionary/meaning/labret/
 La'bret  noun
La'bret  noun [ Latin 
 labrum lip.] 
 (Anthropology) A piece of wood, shell, stone, or other substance, worn in a perforation of the lip or cheek by many savages. 
Found on 
http://www.encyclo.co.uk/webster/L/2

A labret is an ornament inserted in a hole pierced through the lip.
Found on 
http://www.probertencyclopaedia.com/browse/PL.HTM
  No exact match found.