Related Clues:

• An actor may trip over one
• Short note
• See 15-Down
• Hawser
• Limerick part
• It may be overheard in a bar
• ''What's your sign?'' is one
• Script part
• It's for the birds!
• See 65-Down
• Heard in the bar scene, perhaps
• See 61-Across
• ''What's your sign?'' for one
• -
• Poem unit