the day before, the eve / wakefulness / watch, vigil

the day before the eve; the day before yesterday

(computing) screensaver

plural of écran de veille

(informal) the day after a binge, generally characterised by a hangover

(informal) that'll be the day! don't hold your breath!

Alternative form of c'est pas demain la veille

plural of avant-veille

(literally) to be on guard for a sudden, violent gust of wind / (figurative) to keep an eye on things, to look out for squalls, to keep a weather eye open

female equivalent of veilleur / night light / sidelight (on a car) / pilot light