The term POSTAGE is related to the mailing of letters and packages. The crossword solutions for this term are STAMP (5 letters), STAMPS (6 letters), DUE (3 letters), and METER (5 letters). A STAMP is an adhesive paper that is affixed to a letter or package to indicate that the required postage has been paid. Stamps can be purchased in sheets or rolls. A METER is a device used to print postage directly onto an envelope or package. DUE is a term used to indicate the amount of postage that is required for a particular item.