1. 肠胃气,屁：flatulence 气胀 | flatus 肠胃气,屁 | gaseous distention 胃胀气
2. 屁：脾曲综合征, splenic flexure syndrome? | 屁, flatus? | 胼胝性溃疡, callous ulcer, indolent ulcer?
3. 放屁：flatulence 鼓胀 | flatus 放屁 | flavedo 皮肤黄色
noun
1. a reflex that expels intestinal gas through the anus
Synonym: fart farting wind breaking wind