Noah Webster's New International Dictionary of the English Language
1. (n.) Discrimination; judgment; propriety; reason; cause.
2. (n.) Knowledge; understanding.
3. (n.) 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.
4. (n.) Display of art; exercise of ability; contrivance; address.
5. (n.) Any particular art.
6. (v. t.) To know; to understand.
7. (v. i.) To be knowing; to have understanding; to be dexterous in performance.
8. (v. i.) To make a difference; to signify; to matter; -- used impersonally.