Answer: hone

AnswerCrossword Clue
HONEImprove, as one's skills
HONEWork on
HONEUse a whetstone on
HONETouch up
HONEPut to the grindstone
HONEMake more effective
HONEWork on the edge
HONEReady, as a machete
HONEWork on, as one's skills
HONEMake keener
HONEPerfect, as one's skills
HONEStrop
HONESharpen, as one's skills
HONEImprove, as skill
HONEMake more acute, as one's senses
HONETake the strop to
HONEImprove, as a skill
HONEUse a strop
HONEGive an edge to?
HONEWhetstone
honeto sharpen to a fine edge
HONETake a strop to
HONEUse a whetstone
HONEFine-tune
HONEMake perfect
HONEPerfect, as a skill
HONEPut an edge on
HONESharpen
HONEWhet
HONEImprove with effort
HONEGet to the point?
HONEPerfect
HONETry to perfect
HONEUse a strop on
HONEKnife sharpener
HONEGive an edge to
HONEImprove
HONERefine
HONEImprove in small increments
HONEImprove, as skills