Definition of Béarnaise sauce noun from the Oxford Advanced American Dictionary

 

Béarnaise sauce

 noun
noun
NAmE//ˌbeɪərˈneɪz sɔs//
 
, NAmE//ˌbɛrˈneɪz sɔs//
 
[uncountable]
 
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a sauce which contains eggs and herbs
See the Oxford Advanced Learner's Dictionary entry: Béarnaise sauce