課か口こうかこうMeanings1nountaxable and corvée-liable men (ritsuryō system)historical termHistorical term from the ritsuryō period; refers to adult males registered for taxation and forced labor.律りつ令りょう制せいでは、課か口こうは租そ庸よう調ちょうや雑ぞう徭ようの対たい象しょうとなった。Under the ritsuryō system, kakō were subject to taxes and corvée labor.