What is the X in X-mas?
1590s, from Middle French flatulent, from Modern Latin flatulentus, from Latin flatus "a blowing, a breaking wind," past participle of flare "to blow, puff," which is cognate with Old English blawan (see blow (v.1)).
flatulence flat·u·lence (flāch'ə-ləns) or flat·u·len·cy (flāch'ə-lən-sē)
The presence of excessive gas in the digestive tract.
the presence of excessive amounts of gas in the stomach or intestine, which sometimes results in the expulsion of the gas through the anus. Healthy individuals produce significant amounts of intestinal gas (flatus) daily; without rectal release, gases trapped within the digestive system produce bloating and abdominal distention. Although a normal occurrence, flatulence sometimes causes embarrassment because of the sound and fetid odour of the gases