a token resembling a stamp given by a retailer to a buyer; the token is redeemable for articles on a special list
- I have a trading stamp, to buy one hamberger with another free.
- Stamp collectors often trade stamps with others.
- They are stamp collectors; they often trade stamps with each other.
- Stamp collectors often trade stamps with each other.
- He often trade stamps with others.
- Mother always buys things in stores where they give trading stamps.
- trading stamp 优待券