aspirate (n.) Look up aspirate at Dictionary.com
1725, "a sound of or resembling or involving the letter 'H'," especially at the beginning of a word, from Latin aspirationem (nominative aspiratio) "a breathing, exhalation; the pronunciation of the letter H," from aspirare (see aspire).
aspirate (v.) Look up aspirate at Dictionary.com
"to pronounce with audible breath," 1660s (implied in aspirated); perhaps a back-formation from aspiration (n.2), or from French aspirer or directly from Latin aspiratus, past participle of aspirare "breathe at, blow upon" (see aspire). Related: Aspirating.