lavabo

noun

la·​va·​bo lə-ˈvä-(ˌ)bō 

plural lavabos

1

often capitalized : a ceremony at Mass in which the celebrant washes his hands after offering the oblations and says Psalm 25:6–12 (Douay Version)

2

a

: a washbasin and a tank with a spigot that are fastened to a wall

b

: this combination used as a planter

Word History

Etymology

Latin, I shall wash, from lavare

First Known Use

circa 1858, in the meaning defined at sense 1