discrimination; judgment; propriety; reason; cause.-knowledge; understanding.-the familiar knowledge of any art or science, united with readiness and dexterity in execution or performance, or in the application of the art or science to practical purposes; power to discern and execute; ability to perceive and perform; expertness; aptitude; as, the skill of a mathematician, physician, surgeon, mechanic, etc.-display of art; exercise of ability; contrivance; address.-any particular art.-to know; to understand.-to be knowing; to have understanding; to be dexterous in performance.-to make a difference; to signify; to matter; -- used impersonally.