transitive. = sharpen, v. 2. Obsolete.

To make sharp or sharper (in various transferred and figurative senses of the adjective). Now… To render more acute (a person's wits, sight…

transitive. To make sharp, to sharpen. Also figurative.

transitive. To whet.

transitive. To render keen; to sharpen.

transitive. To invigorate or strengthen.

transferred and figurative. To give keenness or incisive force to (appetite, wit, endeavours, etc.).

transitive. To make keen or sharp; to sharpen, stimulate, excite.

transitive. To sharpen, quicken (a quality). rare after 17th cent.

transitive. To sharpen, to give a point to; (figurative) to give sharpness or keenness to.