An opening through which gases, especially air, can pass.

“the vent of a cask; the vent of a mould”

A small aperture.

The opening of a volcano from which lava flows.

To allow gases to escape.

“The stove vents to the outside.”

To allow to escape through a vent.

“Exhaust is vented to the outside.”

To express a strong emotion.

“Can we talk? I need to vent.”