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mayonnaise

noun [U]
 
 
/ˌmeɪ.əˈneɪz/ US  /ˈmeɪ.ə.neɪz/ (informal mayo)

Definition

a thick, white sauce made from oil, vinegar, and the yellow part of eggs, usually eaten coldSauces, dressings, dips and pickles
(Definition of mayonnaise noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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