Definition of: lavabo

(lə·vā′bō) noun plural ·boes
1. In the Anglican and Roman Catholic churches, the washing of the hands by the celebrant after the offertory, during the Eucharist.
2. That part of Psalm xxvi which is recited by the priest while washing the hands: from the opening word.
3. A small linen towel used to wipe the priest's hands in this rite.
4. A stationary washbowl or lavatory with running water; also, in monasteries, the room in which this is placed. [<L, I shall wash, 1st person sing, future of lavare wash]