|  | 
Definition of Tartare sauce
1. Noun. Mayonnaise with chopped pickles and sometimes capers and shallots and parsley and hard-cooked egg; sauce for seafood especially fried fish. 
|  | 
1. Noun. Mayonnaise with chopped pickles and sometimes capers and shallots and parsley and hard-cooked egg; sauce for seafood especially fried fish.