Related Clues:

• It's stuck in a corner
• Philatelist's purchase
• Put one's foot down
• Seal
• Kind of pad
• Postage ___
• Trample
• Official seal
• It may get a licking
• It's canceled when it's accepted
• It may make an impression
• Word with food or rubber
• -
• Prepare to mail
• It's stuck in the corner