/looh"bri keuhnt/ , n.
1. a substance, as oil or grease, for lessening friction, esp. in the working parts of a mechanism.
adj.
2. capable of lubricating; used to lubricate.
[ 1815-25; lubricant- (s. of lubricans ), prp. of lubricare to make slippery. See LUBRIC, -ANT ]