Related Clues:

• Puzzlers
• Puts through a sieve
• Makes finer
• They're hard to figure
• Screens
• Winnows
• Prepares flour, as for baking
• Brainteasers
• Puzzling posers
• Tough nuts
• Works with flour
• Stumpers
• Looks (through), as for information
• Prepares flour
• Baffling questions