spray gun

from the GNU version of the Collaborative International Dictionary of English.

• noun a container for liquid, fitted with a conduit that can be supplied with compressed air, desiged to allowing the contents to be sprayed as an aerosol. Such devices are used to spray paints and various other liquids.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun paint sprayer, powered by compressed air or other gas, larger than an airbrush.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an applicator resembling a gun for applying liquid substances (as paint) in the form of a spray