Under the ADA, the term “disability” means: A. a physical or mental impairment that substantially limits one or more “major life activities,” including working; B. a record of such an impairment; or. C. being regarded as having such impairment, commonly referred to as discrimination based on a “perceived disability.”. inhale (v.) 1725, "to breathe in, draw air into the lungs," a back-formation from inhalation or else from French inhaler in this sense; used as a word to be the opposite of exhale. Slang sense of "eat rapidly" is recorded from 1924. As a noun, "act of inhaling," by 1904. Related: Inhaled; inhaling.