mayonnaise Meaning, Definition & Usage

  1. noun egg yolks and oil and vinegar
    mayo.

WordNet

Ma`yon`naise" noun
Etymology
F.
Definitions
  1. 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.

Webster 1913