A vent for the escape of steam or other gas.
A top-facing opening to a cavity in the ground very near an ocean's shore, leading to a marine cave from which wave water or bursts of air are expelled.
The spiracle, on the top of the head, through which cetaceans breathe.
A vertical opening in the top of a computer case that lets hot air (primarily from the CPU heat sink) escape quickly.
An unintended cavity filled with air in a casting product.
To fill or be filled with air in an unintended cavity.
A blowing off of steam, water, etc.
Something that is blown off.
A fart.
An outburst of temper or excitement.
The explosive separation of part of a rocket etc in order to prevent its destruction and allow for retrieval