pintle

詳細解釋：

pin.tle

n.（名詞）
A pin or a bolt on which another part pivots.
樞軸，柱銷，扣針：在另一鉚釘上的扣針或銷子
Nautical The pin on which a rudder turns.
【航海】 舵栓：牽引槳的部分
The pin on which a gun carriage revolves.
炮架樞軸：炮架轉動用的樞軸
A hook or a bolt on the rear of a towing vehicle for attaching a gun or trailer.
牽引掛鈎：一種掛鈎或軸，可在拖車後裝炮或拖斗

來源：
Middle English pintel
中古英文 pintel
from Old English [penis]
源自 古英文 [ * ]