n. 打嗝, 喷出, 喷出物

[医] 嗳气

Eructation \Er`uc*ta"tion\, n. [L. eructatio: cf. F.
['e]ructation.]
1. The act of belching wind from the stomach; a belch.

2. A violent belching out or emitting, as of gaseous or other
matter from the crater of a volcano, geyser, etc.