Drier

noun

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

   "The sun and a northwesterly wind are great driers of the earth."

2. A household appliance that removes the water from clothing by accelerating evaporation, usually though heat and a tumbling motion.
3. An electric hair dryer.
4. Any other device or substance, household or industrial, designed to remove water or humidity.
5. A catalyst used to promote the drying of paints and varnishes by oxidative crosslinking.