Wiktionary
spray bottle
n. An unpressurized canister equipped with a sprayer that is operated by pressing a handle; used e.g. for detergent.
Wikipedia
Spray bottle
A spray bottle is a bottle that can squirt, spray or mist fluids. A common use for spray bottles is dispensing cool cleaners, cosmetics, and chemical specialties. Another wide use of spray bottles is mixing down concentrates such as pine oil with water.