(informal, vulgar) An emission of digestive gases from the anus; a flatus.

(colloquial, impolite, derogatory) An irritating person; a fool.

(colloquial, impolite, derogatory, potentially offensive) (usually as "old fart") An elderly person; especially one perceived to hold old-fashioned views.

(vulgar, impolite, intransitive) To emit digestive gases from the anus; to flatulate.

(colloquial, vulgar, intransitive, usually as "fart around") To waste time with idle and inconsequential tasks; to go about one's activities in a lackadaisical manner; to be lazy or over-relaxed in one's manner or bearing.

(figurative, transitive) To emit (fumes, gases, etc.).