/ Dictionary / Index H high school: Meaning and Definition of Find definitions for: high' school" Pronunciation: [key] a school attended after elementary school or junior high school and usually consisting of grades 9 or 10 through 12. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: highschool (Thesaurus) high-rolling high sea Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language