Related Clues:

• Envelope stick-on
• Holiday stamp
• One clapping at a circus?
• Perforation site
• Mailing need
• Sea World clapper
• Sea lion's relative
• Fish-eating mammal
• Whiskered circus performer
• Circus animal
• Tamperer's hamperer
• If it's canceled, it's accepted
• Country's emblem
• Forever ___
• Naval commando