(onomatopoeia, medicine) Used to represent the normal rhythm of the heart on auscultation, comprising the first and second heart sounds.

(intransitive) Of a heart, to beat.

Alternative form of lub-dub.

A substance used to reduce friction between objects or surfaces. / A personal lubricant.

(informal) Lubricant.

(transitive, informal) To lubricate.

(colloquial) Lubricating.

To make slippery or smooth (normally to minimize friction) by applying a lubricant.

The application of a substance (a lubricant), between moving surfaces in contact in order to reduce friction and minimize heating.

smooth and glassy; slippery / lewd, wanton, salacious or lecherous