1. (n.) A little pin.

2. (n.) An upright pivot pin

3. (n.) The pivot pin of a hinge.

4. (n.) A hook or pin on which a rudder hangs and turns.

5. (n.) A pivot about which the chassis swings, in some kinds of gun carriages.

6. (n.) A kingbolt of a wagon.

arbor axis axle axle bar axle shaft axle spindle axle-tree distaff fulcrum gimbal gudgeon hinge hingle hub mandrel nave oarlock pin pivot pole radiant rowlock spindle swivel trunnion