S: (n) restraint, constraint (a device that retards something's motion) "the car did not have proper restraints fitted"
S: (n) device (an instrumentality invented for a particular purpose) "the device is small enough to wear on your wrist"; "a device intended to conserve water"
S: (n) core (a bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil)
S: (n) crossbar (a horizontal bar that goes across something)
S: (n) drawbar (a strong metal bar bearing a hook to attach something to be pulled)
S: (n) fret (a small bar of metal across the fingerboard of a musical instrument; when the string is stopped by a finger at the metal bar it will produce a note of the desired pitch)
S: (n) grab bar (a bar attached parallel to a wall to provide a handgrip for steadying yourself)
S: (n) shackle (a U-shaped bar; the open end can be passed through chain links and closed with a bar)
S: (n) slice bar (iron bar used to loosen and rake clinkers out of furnaces)
S: (n) stabilizer bar, anti-sway bar (a rigid metal bar between the front suspensions and between the rear suspensions of cars and trucks; serves to stabilize the chassis)
S: (n) track, rail, rails, runway (a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll)