A one
1. A game where the only opponents are two people playing against each other.
2. Also know as speedballing; a mixture of cocaine and herion, most often injected.
Synonyms for one on one
On this page, you will find 30 slang terms related to A one. Some of the top words include: Nutball, nut tag, diablo 2, schlock ball, teener, and 25 more.