Tonisher (ton′ish·er) n. 1. One that displays an aptitude for taking out ton-plus finishes.Ex. The Tonisher was on display once again, perfectly executing the 124 checkout.2. A person that punishes their opponent via steady application of tons.Ex. Her opponent, once again on no out, had little recourse as the Tonisher hit four consecutive ton-plus rounds to leave tops after twelve. 3. The inability to hit a hat trick in soft tip 501, while still averaging two bulls per round.Ex. "Watch out, I'm gonna ton ya to death!," the Tonisher proclaimed after dotting out once again for a round of 101.