S: (n) copyholder (mechanical device used in printing; holds the copy for the compositor)
S: (n) coupling, coupler (a mechanical device that serves to connect the ends of adjacent objects)
S: (n) curler, hair curler, roller, crimper (a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it) "a woman with her head full of curlers is not a pretty sight"
S: (n) diaphragm, stop (a mechanical device in a camera that controls size of aperture of the lens) "the new cameras adjust the diaphragm automatically"
S: (n) dicer (a mechanical device used for dicing food)
S: (n) pump (a mechanical device that moves fluid or gas by pressure or suction)
S: (n) ratchet, rachet, ratch (mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction)
S: (n) record changer, auto-changer, changer (an automatic mechanical device on a record player that causes new records to be played without manual intervention)
S: (n) ride (a mechanical device that you ride for amusement or excitement)
S: (n) seeder (a mechanical device that sows grass seed or grain evenly over the ground)
S: (n) shutter (a mechanical device on a camera that opens and closes to control the time of a photographic exposure)
S: (n) ski binding, binding (one of a pair of mechanical devices that are attached to a ski and that will grip a ski boot; the bindings should release in case of a fall)
S: (n) splicer (a mechanical device for joining two pieces of paper or film or magnetic tape)
S: (n) splint (an orthopedic mechanical device used to immobilize and protect a part of the body (as a broken leg))
S: (n) sprinkler (mechanical device that attaches to a garden hose for watering lawn or garden)
S: (n) stator, stator coil (mechanical device consisting of the stationary part of a motor or generator in or around which the rotor revolves)
S: (n) stoker (a mechanical device for stoking a furnace)
S: (n) stretcher (a mechanical device used to make something larger (as shoes or gloves) by stretching it)
S: (n) striker (the part of a mechanical device that strikes something)
S: (n) supply chamber (a mechanical device for holding something and supplying it as needed)
S: (n) swing (mechanical device used as a plaything to support someone swinging back and forth)
S: (n) medicine, practice of medicine (the learned profession that is mastered by graduate training in a medical school and that is devoted to preventing or alleviating or curing diseases and injuries) "he studied medicine at Harvard"