Douglas Harper's Etymology Dictionary
1763, French café au lait, literally "coffee with milk," from lait "milk" (12c.), from Vulgar Latin lactis, from Latin lactis (see lactation).\n
Wiktionary
n. 1 A mixture of coffee and hot milk. 2 Coffee and hot milk served in separate jugs as a breakfast drink 3 a light coffee colour
WordNet
n. equal parts of coffee and hot milk
Wikipedia
Café au lait (; French for "coffee with milk") is coffee with hot milk added. It differs from white coffee, which is coffee with cold milk or other whitener added.
Café au lait is coffee with hot milk added.
Café au lait may also refer to:
Usage examples of "cafe au lait".
As Indy sat down, the waiter appeared and they ordered cups of cafe au lait.
As night falls, the doorkeeper offers to bring Meursault a mug of cafe au lait--coffee with milk.
There was another man with him, a very tall young man with a dark cafe au lait skin whom Hob had met sometime before at a party.