pin·tle /ˈpɪntḷ/
樞軸,舵栓
Pin·tle n.
1. A little pin.
2. Mech. An upright pivot pin; as: (a) The pivot pin of a hinge. (b) A hook or pin on which a rudder hangs and turns. (c) A pivot about which the chassis swings, in some kinds of gun carriages. (d) A kingbolt of a wagon.
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pintle
n : a pin or bolt forming the pivot of a hinge