Chucky is a diminutive form of the name Chuck, often used as a nickname. It can refer to various entities, including a fictional character in the Child's Play franchise, a video game titled 'Chucky: Slash & Dash', a TV series named 'Chucky', and an endangered fish species known as the Chucky madtom. Additionally, in English slang, 'Chucky' is used to refer to an Irish Republican, derived from the pronunciation of their slogan 'Tiocfaidh ár lá'.