parenthesis line
n.— «Juvederm…ULTRA can be used for deep facial wrinkles and folds commonly known as the “parenthesis lines” around the mouth and lower face area.» —“The Juvederm(R) ULTRA Range: Next-Generation Dermal Filler Treatment for Facial Wrinkles and Lines Now Available in the UK” FOX Business Feb. 7, 2008. (source: Double-Tongued Dictionary)
Further reading
Stunt performers in movies have their own jargon for talking about their dangerous work. In New York City, the slang term brick means “cold,” and dumb brick means “really cold.” Plus: the East and Central African tradition...