Possible Clues:

• Despite being holey it holds water
• Counter cleaner
• Soapy antecedent of Pickwick and descendant of 17
• A sucker that needs a sucker to suck on
• Alcoholic cake
• Parasite
• Broken pegs around on a sucker may need a sucker
• Marine creature's hum pervading ocean? Not quite
• 1 across is where this sort of sucker might be
• Spot remover