futtock

fut.tock

n.Nautical （名词）【航海】
One of the curved timbers that forms a rib in the frame of a ship.
复肋材：构成船的肋骨部位的曲线形木材

来源：
Middle English fottek
中古英语 fottek
perhaps alteration of fothok
可能为 fothok的变化
fot [foot] * see foot
fot [（帆的）下缘] *参见 foot
hok [hook] * see hook
hok [ 钩状物，锚] *参见 hook