a crescent-shaped object or mark, in particular 新月状物,月牙形标记,尤指 ■the white area at the base of a fingernail (指甲根部)月牙白 ■a crescent-shaped Bronze Age ornament worn as a necklace (青铜时代的)新月状项圈
派生 lunular adjective lunulate adjective 语源
late 16th cent. (denoting a crescent-shaped geometrical figure): from Latin, diminutive of luna 'moon'