Related Clues:

• Howl or bark
• Opposite of laugh
• Used to go out with to hotel for drink to get something off one's chest
• Released air
• "One for all and all for one," e.g
• Discharge, as steam
• "Eureka!" or "Ouch!"
• Overreact to spilt milk?
• Let air out
• Fail at stoicism, say
• Heating outlet
• "Eureka!" is one
• Release issued from the Royal Opera House?
• Get out of breath
• Puff, perhaps, previously fit