I. ˈlā-vər noun
Etymology: Middle English lavour, from Anglo-French lavour, lavere, from Medieval Latin lavatorium
Date: 1535
: a large basin used for ceremonial ablutions in the ancient Jewish Tabernacle and Temple worship
II. ˈlā-vər, ˈlä- noun
Etymology: New Latin, from Latin, a water plant
Date: 1611
: any of several common red algae (genus Porphyra ) with fronds used especially for stewing or pickling — compare nori