the flesh of (mature adult) sheep used as food
羊肉
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a leg of mutton .一条羊腿。
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dead as mutton quite dead 气绝已久的,僵死的 -
mutton dressed as lamb Brit .informal, derogatory a middle-aged or old woman dressed in a style suitable for a much younger woman 〈英,非正式,贬〉 打扮年轻的老妇(或中年妇女)
"Middle English: from Old French