What is an aerator?
Aerator definition – A device installed on faucets to increase spray velocity, reduce splash and save water and energy. It is found on most modern kitchen and bathroom faucets. A clogged aerator can cause water spits.
Ideal Home Garden Explains
An aerator turns one running stream of water into many tiny little streams, spreading the water out through the faucet. The benefits of aerators are that they conserve water by spraying instead of pouring water out in one large constant stream. This stream tends to splash and waste water.