What is the meaning of Dryer?

One who, or that which, dries; a desiccative.

A household appliance that removes the water from clothing by accelerating evaporation, usually though heat and a tumbling motion.

An electric hair dryer.

Any other device or facility, household or industrial, designed to remove water or humidity.

A catalyst used to promote the drying of paints and varnishes by oxidative crosslinking.

comparative form of dry: more dry

Source: wiktionary.org