From Longman Dictionary of Contemporary Englishfartfart1 /fɑːt $ fɑːrt/ verb [intransitive] not polite HBHto make air come out of your bowels SYN break wind → fart about/around→ See Verb table
Examples from the Corpus
fart• What would they do if she farted?• Gleeson farted and bared more of his teeth at Marcus.• I've farted around too much, that's the triste truth.• Marie: Yeah, we think he farted around.• So the train bumps and farts its way along the tracks.• Or mention farting, or something.• By most people's standards Marilyn Monroe was fairly uninhibited; bathing infrequently, and belching and farting with carefree abandon.fartfart2 noun 1 [countable] not politeHBH an act of making air come out of your bowels2 → old fartExamples from the Corpus
fart• My old man said be a Swansea fan but I said bog-off, cobblers you're a fart!• A fart is not an atom bomb...• So he unbuckled his belt and squatted again, exploding farts and twisted guts.• Soho, meanwhile, enthuse and make me feel like a miserable old fart.• The old fart had served his purpose.• No, the idea is to open it without so much as a nun's fart.• The coaches stunk of coal smoke and rationed tobacco and rationed booze and the farts of people eating wartime food.Origin fart1 Old English feortan 