Related Clues:

• Hooter stopping work — no coming back
• Fail suddenly, with "out"
• Fail suddenly, with 'out'
• Hit — almost hit back
• Head rap?
• Go kaput, with 'out'
• Strike on the head
• Nose (informal)
• Nose must be cold on top of K2
• Humorous head-smack sound
• ___ out (fall fast asleep)
• Apt rhyme of 'conk'
• ___ out (stop functioning)
• -- out; nose (slang)
• Stop running, with 'out'