详细解释:n. 支撑杆
详细解释：
knight.head
n.Nautical （名词）【航海】 Either of two timbers rising from the keel of a sailing ship and supporting the inner end of the bowsprit.艏副肋材：两根肋材中的任一根，从帆船的龙骨伸出并支撑船首斜桁内端
来源：[From the fact that it was sometimes decorated with a carving of a man`s head] [源自它有时被饰有男子头像的事实]