lavabo

noun pl. lavaboes -·boes

1. R.C.Ch.
   1. a short ritual, after the Offertory of Mass, in which the celebrant washes his fingers
   2. the basin used
      in full lavabo dish (or basin or bowl) lavabo dish (or basin or bowl)
2. 1. a basin and a tank for water above it, hung on a wall
   2. a wall planter resembling this

Etymology: L, I shall wash < lavare: see lave