- béarnaisesauce
- bé•ar•naise′ sauce`[[t]bɛrˈneɪz, -ˈnɛz, ˌbeɪ ər-[/t]] n.coo a thick sauce of egg yolks, butter, vinegar, wine, shallots, and tarragon•Etymology: < F, =Béarn district in SW France +-aise, fem. of -ais -ese
From formal English to slang. 2014.