cap gun

American  

noun

1. cap pistol.

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Etymology

Origin of cap gun

An Americanism dating back to 1930–35

Example Sentences

The move follows similar laws introduced in Western Australia earlier this year to cap gun ownership.

From BBC

But it was his other early work, studying the spectroscopic fingerprint of hydrogen, that would prove crucial a decade later, when he discovered an object that made a supernova look like a child’s cap gun.

From Los Angeles Times

At last Brad fired his cap gun.

From Literature

There were four pops in rapid succession, like a cap gun.

From Literature

There I am, with a cap gun and cowboy hat on Christmas morning some geologic age ago.

From The New Yorker