retractor

noun

1. a person or thing that retracts.
2. Anatomy. a muscle that retracts an organ or protruded part.
3. Surgery. an instrument or appliance for drawing back an impeding part, as the edge of an incision.
4. a mechanism, device, or the like that regulates retraction: to adjust the retractor on a seat belt.

noun

1. anatomy any of various muscles that retract an organ or part
2. surgery an instrument for holding back the edges of a surgical incision or organ or part
3. a person or thing that retracts

n.

1. A surgical instrument used to hold back organs or the edges of an incision.
2. A muscle, such as a flexor, that retracts an organ or a part.