• WordNet 3.6
    • n airgun a gun that propels a projectile by compressed air
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Webster's Revised Unabridged Dictionary
    • airgun gŭn` A kind of gun in which the elastic force of condensed air is used to discharge the ball. The air is powerfully compressed into a reservoir attached to the gun, by a condensing pump, and is controlled by a valve actuated by the trigger. The common BB gun is a type of air gun.
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Century Dictionary and Cyclopedia
    • n airgun A gun in which condensed air is used as the propelling agent. The bore of the barrel is connected with a reservoir inclosed within or attached without the stock, into which air is forced by a piston or plunger fitted to the bore, or by an independent condenser. When the trigger is pulled it operates a valve which permits the sudden escape of the whole or of a portion of the condensed air into the barrel at the rear of the ball or dart, thus projecting the latter. In some forms the propelling agent is a compressed spring freed by the trigger. The reactive force of the spring compresses the air which interposes between it and the projectile, and the air acts upon and projects the ball.
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In literature:

There's genius in that, for who would expect to find such a thing fired from an airgun?
"The Return of Sherlock Holmes" by Arthur Conan Doyle
The airgun too was fired, and astonished them greatly.
"History of the Expedition under the Command of Captains Lewis and Clark, Vol. I." by Meriwether Lewis and William Clark
In this cupboard reposed an airgun, a bugle, a catapult, and a mouth-organ.
"More William" by Richmal Crompton
Here's an airgun too.
"On With Torchy" by Sewell Ford
The guns in The Books are rifles and shotguns and revolvers and airguns.
"The Return" by H. Beam Piper and John J. McGuire
On the very same day master Eleazar had just got a new airgun, which he wanted to try.
"The Old Man of the Mountain, The Lovecharm and Pietro of Abano" by Ludwig Tieck

In news:

Veteran consumer packaged goods executive Phil Dolci was named president and CEO of airgun manufacturer Crosman.
Online video fires up conversions for Airgun Depot.
The online retailer of airguns and airgun accessories began adding videos about three years ago, using a video player from
The retailer today displays at least 15 videos that consumers can view to learn more about the airguns for sale.
Airgun Depot began posting videos three years ago.
Product videos increase consumer browsing times for Airgun Depot.
Adding product videos to its website has led to increased site traffic and consumer browsing time for Airgun Depot.
UK Police Highlight Airgun Dangers.
Maximizing profits for your business means staying ahead of the competition, analyzing the latest trends and tapping into niche markets — like airguns and airsoft.
Strathclyde Police hold a special campaign to show Airguns are not toys and "playing" around with them can result in death, injury or jail.
Strathclyde Police hold a special campaign to show Airguns are not toys and.
Ban on airguns that resemble military weapons proposed.
A Swedish made FX Monsoon pre-charged pneumatic airgun.
Although there has been a great deal of interest in.20-caliber rifles recently, airgun enthusiasts have had a.20-caliber available for well over half a century.
Aldrea Rife and Deborah Viperman brag on their marksmanship skills to Una Freeman after giving the airgun station a go.