第一課 だいいっか Meanings Noun lesson one; first lesson first section (in an organization); first division; first department Kanji 第 No.. Read as ダイ. 一 one. Read as イチ. 課 lesson. Read as カ. Words containing 第一課 捜査第一課 (そうさだいいっか) First Investigation Division (of the Japanese police) Jinuma: Japanese Dictionary · Word lists