dryer

Etymology 1

From Middle English driere, dreyere (“one who dries”), equivalent to dry + -er (agent noun suffix).

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 facility, household or industrial, designed to remove water or humidity.
   At that time, father, brother and I worked as night watchmen at the grain dryer. It was a large and complicated structure built out in the steppe. It consisted of a wooden tower with swinging shelves attached to the inside walls,[…] 2004-12-17, Evgenii D. Moniushko, From Leningrad to Hungary: Notes of a Red Army Soldier, 1941-1946, Routledge, page 51
5. A catalyst used to promote the drying of paints and varnishes by oxidative crosslinking.

Etymology 2

dry + -er (comparative suffix)

adj

1. (US) comparative form of dry: more dry