1. A small gun used by children.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• popcrn,
• poporn,
• poppen,
• diopgon,
• oppugn,
• oopgun,
• lopgun,
• -opgun,
• 0opgun,
• pipgun,
• pkpgun,
• plpgun,
• pppgun,
• p0pgun,
• p9pgun,
• poogun,
• polgun,
• po-gun,
• po0gun,
• popfun

The adjective form of the word "popgun" is "popgun-like".

The plural of the "popgun" can be the "popguns".

The singular of the "popgun" can be the "popgun".