(1):
(n.) A preparation of vegetables, as lettuce, celery, water cress, onions, etc., usually dressed with salt, vinegar, oil, and spice, and eaten for giving a relish to other food; as, lettuce salad; tomato salad, etc.
(2):
(n.) A dish composed of chopped meat or fish, esp. chicken or lobster, mixed with lettuce or other vegetables, and seasoned with oil, vinegar, mustard, and other condiments; as, chicken salad; lobster salad.