[mass noun]an edible seaweed with thin sheet-like fronds of a reddish-purple and green colour which becomes black when dry. Laver typically grows on exposed shores, but in Japan it is cultivated in estuaries 脐形紫菜
late Old English (as the name of a water plant mentioned by Pliny), from Latin. The current sense dates from the early 17th cent
laver2 [ˈleɪvə] noun
(archaic or poetic/literary)a basin or similar container used for washing oneself (古,或诗/文)浴盆 ■(in biblical use) a large brass bowl for Jewish priests' ritual ablutions (圣经中)犹太牧师洗礼用大铜盆
语源
Middle English: from Old French laveoir, from late Latin lavatorium 'place for washing' (see lavatory)