A type of horn, commonly used for children's parties, consisting of a simple whistle to which is attached a rolled-up paper tube that unrolls when blown.

(mining) A machine that uses an air blower to blow away light fines to concentrate heavy fines and larger bits, from pay dirt. This concentrate can then go through further refinement.

A glass tube filled with menthol crystals which are propelled into an actor's eyes to induce tears.

A machine used to measure the airtightness of a building or ductwork, etc., incorporating a variable-speed fan and a manometer.

plural of blower door

Alternative form of smoke blower (any sense).

Device to clear a gun turret on a naval ship of the smoke and gasses from discharging the gun.

A device for directing a jet of steam on the boiler tubes of a steam boiler, so as to remove deposits of soot inside the tubes.