eleven
n.— «Botox also is used for “losing your 11,” the term for vertical frown lines on the forehead, for crow’ feet at the outer corner of the eyes, for smoker’s lines and for horizontal lines on the forehead.» —“The New Facelifts” by Patricia Moore PennLive.com (Harrisburg, Pennsylvania) Feb. 2, 2009. (source: Double-Tongued Dictionary)