(education) first year in senior high school; tenth grade / (education) first-year student in senior high school

(education) third year in senior high school; twelfth grade / (education) third-year student in senior high school

(education) second year in senior high school; eleventh grade / (education) second-year student in senior high school

Clipping of 女子高校生 (joshi kōkōsei, “high-school girl”).

a pitch accent pattern in Japanese where the first mora is high, followed by an immediate downstep: the first syllable has high pitch and all subsequent syllables have low pitch

Kyūjitai form of 高血圧 (“high blood pressure; hypertension”)

penny wise and pound foolish; you get what you pay for

Alternative spelling of 高足蟹 (“Japanese spider crab”)

Clipping of 高品位テレビジョン (kōhin'i terebijon, “high-definition television”).

high definition (enhanced picture quality)