The word ‘fart’ comes from an Old English word meaning ‘to break wind’
As you may have guessed, ‘fart’ is not the medical word for the gross/hilarious act of passing gas. The medical term for gas released from the intestinal is ‘flatulence.’ ‘Fart’ is a slang term coined in 1632 (yes, even back then people farted). The Oxford English Dictionary defines the transitive verb form of ‘fart’: To send forth as wind from the anus.
The word comes from the Old English word ‘feortan’ which means ‘to break wind.’ The OED mentions that the word ‘fart’ is ‘not in decent use.’ However, it has still been used by many great English poets, like Geoffrey Chaucer.