air gun

There's genius in that, for who would expect to find such a thing fired from an air-gun.

Immediately after came the "pluff" of an air-gun being discharged, and a pellet thudded against a post on the tow-path.

There are several other good types of air-gun, all of which employ the principles described above.

The first day I was given an air-gun—this is many years ago, Raney—I winged a harmless, necessary milch cow.