(复同单)an aquatic bird of the rail family, with blackish plumage, lobed feet, and a bill that extends back on to the forehead as a horny shield
大((GF8A4))，白骨顶。
(常作
〈非 正式，主北美〉 （尤指年老的）傻瓜；怪人。
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cootn.大((GF8A4))；白骨顶；傻瓜；怪人
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cooladj.凉快的；凉爽的；冷淡的；不热心的；酷的；整整的；不折不扣的；清凉的；冷静的；不错
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costv.成本为；价格为；给… 估价；导致…损失；使付出…的代价；使费力做；使参与；使花许多钱
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rootn.根部；根茎；地下茎；根源；来源；原因；根；性交；翻找；搜寻；发掘
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footn.脚；足；底端；最下部；底座；英尺；音步；步伐；运动（或吸附）器官
"Middle English： probably of Dutch or Low German origin and related to Dutch