A reflexive or reciprocal pronoun: oneself, himself, herself, itself, yourself; themselves; yourselves; each other; one another; A pronoun used with transitive verbs to create the passive voice; A pronoun used with a verb conjugated in the third-person singular to convey an impersonal meaning; Used to third person subjunctive moods to form an impersonal imperative.
hair dryer, blow dryer (An electric device for drying hair by blowing hot air on it); dryer (any other device, household or industrial, designed to remove water or humidity)
dryer, clothes dryer (a household appliance that removes the water from clothing by accelerating evaporation, usually though heat and a tumbling motion); dryer (any other device, household or industrial, designed to remove water or humidity)