Protractor

Full definition of protractor

Noun

1. One who, or that which, protracts, or causes protraction.
2. A circular or semicircular tool for drawing or measuring angles.
3. (surgery) An instrument formerly used in extracting foreign or offensive matter from a wound.
4. (anatomy) A muscle that extends an organ or part; opposed to retractor.
5. An adjustable pattern used by tailors.