Lavabo in a sentence as a noun

Definitely not "lavabo"... you might be half-way there about "almost all of European languages", but it definitely means not just washbasin in spanish, it also means bathroom... you can also mean to say toilet or loo, like "puedo ir al lavabo?"

Lavabo definitions

noun

a basin for washing the hands (`wash-hand basin' is a British expression)

See also: washbasin handbasin washbowl