postage due
noun1
Hobbies, Lifestyle, Philately A postage due stamp.
adj, noun — 2 senses
Indicating that insufficient or no postage has been prepaid for the delivery of an item of mail.
Hobbies, Lifestyle, Philately A postage due stamp.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.