S: (n) pin, pin tumbler (cylindrical tumblers consisting of two parts that are held in place by springs; when they are aligned with a key the bolt can be thrown)
S: (n) pin, flag (flagpole used to mark the position of the hole on a golf green)
S: (n) pin (a small slender (often pointed) piece of wood or metal used to support or fasten or attach things)
S: (n) peg, pin, thole, tholepin, rowlock, oarlock (a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing)
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"