(~s)
1.
A ~ is an ornamental feature in a pool or lake which consists of a long narrow stream of water that is forced up into the air by a pump.
N-COUNT
2.
A ~ of a liquid is an amount of it which is sent up into the air and falls back. (LITERARY)
The volcano spewed a ~ of molten rock 650 feet in the air.
= jet
N-COUNT: usu N of n