Related Clues:

• Sharp -- tack
• Happy __ clam
• Clean-whistle link
• Analogy bit
• 'That's all there ___ it!'
• Words in an analogy
• Cool -- cucumber
• Fit -- fiddle
• Thick-brick center
• Solid-rock center?
• Dead ___ dodo
• Thick-brick link
• Fit __ fiddle
• Quick ___ wink
• __ rule