lavabo
/ləˈveɪbəʊ/noun
(pl. -os)
1- (in the Roman Catholic Church) a towel or basin used for the ritual washing of the celebrant's hands at the offertory of the Mass（罗马天主教教会）（弥撒奉献仪式中供主持人洗手用的）洗手毛巾, 洗手盆。
1.1
- mass noun ritual washing of this type洗手礼。
1.2
- dated a washbasin〈旧〉脸盆。
1.3
- /ˈlævəbəʊ/a monastery washing trough修道院洗槽。
词源
mid 18th cent.: from Latin， literally 'I will wash'， in Lavabo inter innocentes manus meas 'I will wash my hands in innocence' （Ps. 26:6）， which was recited at the washing of hands in the Roman rite.