1. A sibilant sound: the whoosh of the high-speed elevator.
2. A swift movement or flow; a rush or spurt.
3. to make a soft sibilant sound.
4. to move or flow swiftly with or as if with such a sound.

1. A breathy sound like that of an object passing at high speed.
2. to make a breathy sound like a whoosh.

1. gush or squirt out
2. the noise produced by the sudden rush of a fluid (a gas or liquid)
3. move with a whooshing sound
4. move with a sibilant sound