Definition of dryer noun from the Oxford Advanced Learner's Dictionary

 

dryer

 noun
(also drier)noun
BrE BrE//ˈdraɪə(r)//
 
; NAmE NAmE//ˈdraɪər//
 
 
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(especially in compounds) a machine for drying something a hairdryer Don’t put that sweater in the dryer. see also spin dryer, tumble dryer Word Origin Middle English (in the sense ‘person who dries’): from the verb dry + -er.
See the Oxford Advanced American Dictionary entry: dryer