mayonnaise

n. 1 thick creamy dressing of egg-yolks, oil, vinegar, etc. 2 dish dressed with this (egg mayonnaise). [french]

n. A sauce compounded of raw yolks of eggs beaten up with olive oil to the consistency of a sirup, and seasoned with vinegar, pepper, salt, etc.; -- used in dressing salads, fish, etc. Also, a dish dressed with this sauce.