The Collaborative International Dictionary
staple gun \sta"ple gun`\, n. A device used to drive a heavy staple[8] through multiple objects, so as to fasten them together; it has a spring mechanism which stores force as a lever is pulled by the operator's hand, and the force is released all at once to drive the staple fully into the object to be fastened.
Wiktionary
n. A heavy-duty device for driving staples directly into wood or other material.
WordNet
Wikipedia
A staple gun or powered stapler is a hand-held machine used to drive heavy metal staples into wood, plastic, or masonry. Staple guns are used for many different applications and to affix a variety of materials, including insulation, house wrap, roofing, wiring, carpeting, upholstery, and hobby and craft materials. These devices are also known as a trigger tacker
Usage examples of "staple gun".
They looked like the result of a forced union between a bullpup assault rifle and an industrial staple gun, except they were made out of this bright yellow plastic.
He was using the staple gun, fastening another target to cardboard and attaching it to the frame in his lane.
While Hasan collected the cable, Rodgers used a staple gun to make a protective, insulated mitt from a pair of rubber mouse pads.
But he was out cold, sapped on the skull by a hooker swinging a staple gun.
A clump of pine boughs had been crudely gathered and stuck to the front farmhouse door by a huge, ugly staple-the kind fired from a heavy-duty, industrial staple gun.
I concentrated on this as hard as anyone can focus on performing such a nothing little task, and when I was through, the poster had been mounted with the staple gun.
She picked up the heavy-duty staple gun and checked that it was loaded.
They looked like the result of a forced union between a bulipup assault rifle and an industrial staple gun, except they were made out of this bright yellow plastic.
She paused, sucked in a deep breath, and made a reflexive catch of the suddenly airborne staple gun.
We used them and a staple gun to seal the broken windows as best we could.