- One who, or that which, protracts, or causes
protraction. - 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. - An instrument formerly used in extracting foreign or
offensive matter from a wound. - A muscle which extends an organ or part; -- opposed to
retractor. - An adjustable pattern used by tailors.