café au laitPronunciation: /ˌkafeɪ əʊ ˈleɪ, ˌkafɪ/Definition of café au lait noun [mass noun] coffee with milk. the light brown colour of coffee with milk: [as modifier]:smooth cafe au lait skinOrigin:Frenchcafé au lait in other Oxford dictionaries Definition of café au lait in the US English dictionary