1. (verb) make perfect or complete

• perfect

1. (noun) a whetstone made of fine gritstone; used for sharpening razors

• whetstone

2. (verb) sharpen with a hone

• sharpen

3. (verb) make perfect or complete

• ameliorate
• amend
• better
• improve
• meliorate

1. (verb) sharpen with a hone

• set

2. (verb) make perfect or complete

• brush up
• polish
• polish up
• round
• round off
• optimise
• optimize

1. (verb) make perfect or complete

• perfecter
• perfectible
• perfection