Related Clues:

• This may keep one going but stop one's engine
• Eat like a rodent
• Resolution
• Pluckiness
• Chew at persistently
• Nibble like a beaver
• "True ___" (Wayne flick)
• "True ___" (2010 remake)
• Chew on some rawhide
• See 12
• See 6
• Eat Chinaman up
• Courage needed on icy roads
• Sand in bottle
• Chew like a squirrel