A liquid (often thickened) condiment or accompaniment to food.

(UK, Australia, New Zealand, India) Tomato sauce (similar to US tomato ketchup), as in:

(slang, usually “the”) Alcohol, booze.

(bodybuilding) Anabolic steroids.

(art) A soft crayon for use in stump drawing or in shading with the stump.

(Internet slang) Alternative form of source, often used when requesting the source of an image or other posted material.

To add sauce to; to season.

To cause to relish anything, as if with a sauce; to tickle or gratify, as the palate; to please; to stimulate.

To make poignant; to give zest, flavour or interest to; to set off; to vary and render attractive.

(colloquial) To treat with bitter, pert, or tart language; to be impudent or saucy to.

(slang) To send or hand over.