| 1. | a person or thing that caps. |
| 2. | Also called topper. something that completes or adds to what has preceded it: The capper was that we didn't know each other after all. |
| 3. | Slang. an informer, esp. for gamblers. |
| 4. | Slang. a by-bidder at an auction. |
capper
[ˈkæpɚ]
|