proper noun/bwa.lo/
a surname, Boileau, transferred from the nickname, equivalent to English Drinkwater; a municipality of Papineau Regional County Municipality, Outaouais, Quebec, Canada
Related: Boilois, Boiloise
From bois + l' + eau, literally “drink water”; nickname of a teetotaler. The first component of the compound is an imperative form of boire. The municipality in Québec is named after its first postmaster, one Pierre Boileau.