Chay is a masculine name. It is either a diminutive of Charles, ultimately derived from Germanic Karal, Karel, Karl, meaning “man”, or it may be Gaelic in origin, meaning “Fairy Tale” .
The name Chay is traditionally male and has dual possible origins: it might be an abbreviation of Charles, rooted in Germanic meanings of "man", or it may derive from Gaelic, suggesting the term for "Fairy Tale".