postage stamp

noun3

1. •
   A small piece of printed paper stuck on an item to be mailed, indicating that postage has been paid.

   • The postage stamps on the letters from overseas were almost as interesting as the letters themselves.
2. •
   (informal, figurative) A very small area.

   • We have just a postage stamp of a back garden.
3. •
   (slang) The upper left- or right-hand corner of the goal.

   • […] got in on the act himself, firing in an unstoppable shot that arced into the postage stamp top corner of Andy Goram's goal. — 2011