The definition of air dry means to leave something in an open area so that the atmosphere surrounding it will cause the liquid in it to evaporate.
(verb)To hang damp laundry on a clothesline is an example of air dry.
See air-dry in Webster's New World College Dictionary
transitive verb air-dried, air-drying
adjective
See air-dry in American Heritage Dictionary 4
transitive verb air-dried air-dried, air-dry·ing, air-dries
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