Related Clues:

• Cracked open
• Like a 1-Across, maybe
• 'When it's ___' (old riddle answer)
• Leaving a small opening
• How the ecstatic walk
• Nearly closed
• Radio booth warning
• Between open and closed
• How many a product is advertised
• Pleasant way to walk
• Door positioning
• See 19-Down
• For all to hear
• Mourn
• Cracked a bit