%protractor%

n. 1. One who, or that which, protracts, or causes protraction. [ 1913 Webster ]

2. A mathematical instrument for laying down and measuring angles on paper, used in drawing or in plotting. It is of various forms, semicircular, rectangular, or circular. [ 1913 Webster ]

3. (Surg.) An instrument formerly used in extracting foreign or offensive matter from a wound. [ 1913 Webster ]

4. (Anat.) A muscle which extends an organ or part; -- opposed to retractor. [ 1913 Webster ]

5. An adjustable pattern used by tailors. Knight. [ 1913 Webster ]