Related Clues:

• Word of warning
• Meaning of 'cave'
• Parting phrase
• Parting words
• 'Watch out!'
• 'See ya'
• Heed
• Steer clear of
• 'Be well'
• '___ the Ides of March'
• Watch your step!
• "Later"
• Cautioner's word
• Sign on a fence, perhaps
• Sign on a gate