1A postage stamp affixed to mail to show that postage has been paid.
封筒に切手を一枚貼って、ポストに投函した。
I put one stamp on the envelope and dropped it in the mailbox.
郵便局で切手を買ってから、荷物を送った。
I bought stamps at the post office before sending the package.
この手紙には切手が足りないので、もう一枚貼ってください。
This letter doesn't have enough postage, so please add another stamp.
祖母は切手収集が趣味で、古い切手をたくさん持っている。
My grandmother collects stamps as a hobby and has many old ones.
2A merchandise certificate that can be exchanged for goods, like a gift voucher; short for 商品切手. Distinct from a postage stamp.
結婚のお祝いに商品切手を贈った。
I gave a merchandise certificate as a wedding gift.
デパートの切手をお中元にいただいた。
I received a department store merchandise certificate as a mid-year gift.