I. noun
1. : a secondary school usually public-supported and usually organized on a 3-year or 4-year basis and comprising several divisions (as college preparatory, commercial, vocational, general)
2. Britain : a college preparatory school
3. : a school specializing in adult education often professional or technical but sometimes liberal — compare folk high school
II. noun
Etymology: translation of French haute école
: a system of advanced exercises in horsemanship