| Main Entry: | proof-of-purchase |
| Part of Speech: | adj |
| Definition: | pertaining to a symbol or label on a product that can be removed by the buyer to prove purchase of a product in order to receive a rebate or refund |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a fool or simpleton; ninny. |