Possible Clues:

• Black eye!
• Sounds as if with this black, I get polish
• Jab-related injury?
• Polish form of a black 17 across
• Bootblack gets a black eye
• Shows the boxer's taken a blow from someone who excels
• What a blow it must have been to make one see so brightly through the dark
• Start on the leg, but gets 'er in the eye
• Is polish needed to make this so black?
• Rub Roger's black eye