headgearWiktionary 原文中文来自 ECDICTn.头饰，马首挽具，井架构词拆分head词根/词干+gear词根/词干词源说明From head + gear.释义（英文）名词 Noun(uncountable) Anything worn on the head, such as a hat, hood, helmet, etc.The harness that fits on a horse's head.The lifting gear at the head of a mine or deep well