A person who is right-handed, meaning they predominantly use their right hand for tasks and activities. As a righty, she found it easier to write and throw with her right hand.
A right-handed pitcher in baseball. The team decided to start the game with their best righty on the mound.
Informal, often derogatory: a person who holds right-wing political views. The talk-show host is a hardline righty who opposes any form of government regulation.