Vocabulary What does 嫡子 (ちゃくし, chakushi) mean? 嫡子 (ちゃくし, chakushi) means heir. Quick factsReadingちゃくしRomajichakushiPart of speechnoun 嫡子ちゃくしchakushiheir1noun heir2noun legitimate childKanji in this word嫡legitimate (wife or heir); heir by the principal line子child