Water gun

A hand-operated toy that propels water as a stream or spray, usually through a trigger-operated pump or pressurized reservoir.

Piston pump: A pump that moves fluid by driving a piston through a cylinder. Many trigger-operated water guns use a piston to draw in and expel water.
Water pistol: A small toy shaped like a pistol that shoots water. Water guns belong to this older, broadly defined family of squirting toys.
Water balloon: A small balloon filled with water and used as a throwable toy. Water balloons are a common alternative in the same outdoor water-play activities.
Water blaster: A toy that projects water, often using a pump or pressurized reservoir. The name often emphasizes high capacity or force, though its mechanism can match a water gun.
Toy gun safety: Practices and policies intended to prevent injury or dangerous confusion involving toy firearms. Realistic water-gun shapes can be mistaken for weapons, especially in public spaces.
Positive-displacement pump: A pump that moves fluid by trapping a volume and forcing it through an outlet. Piston mechanisms in water guns belong to this broader pump family.
Super Soaker: A high-capacity water gun developed by Lonnie Johnson and first sold in 1990. Its air-pressure design transformed the scale and range expected of a water gun.
Soaker hose: A porous garden hose that releases water slowly along its length. Unlike a water gun, it applies water continuously rather than aiming a propelled stream.
Squirt bottle: A bottle that releases liquid through a hand-operated trigger and nozzle. It shares a trigger-and-nozzle form but is designed mainly for dispensing, not play.
Orange tip: A brightly colored marking on a toy firearm intended to distinguish it from a real weapon. Some water guns use conspicuous colors or markings to reduce mistaken identification.

Linked from 1 page