商しょう業ぎょう高こう等とう学がっ校こうしょうぎょうこうとうがっこうMeanings1nouncommercial high schoolA type of Japanese senior high school focusing on business and commerce subjects.彼かれは商しょう業ぎょう高こう等とう学がっ校こうで簿ぼ記きを学まなんだ。He studied bookkeeping at a commercial high school.