To make smooth or slippery; as, mucilaginous and saponaceous remedies lubricate the parts to which they are applied.

To reduce social frictions or difficulties between people, thus making cooperation easier and joint action smoother.

To make smooth or slippery by applying a substance, such as oil, on moving parts or objects, to reduce friction.

Swabbing or spraying the dies with lubricant to assist in initial flow and to facilitate ejection of the forging.

To inebriate by supplying with alcoholic beverages.

To apply a lubricant to, as oil or tallow.

apply a lubricant to; "lubricate my car"

have lubricating properties; "the liquid in this can lubricates well"