noun, noun which may take the genitive case particle 'no'
illegitimate birth; born out of wedlock
Refers to a child born to parents not legally married. Often used in historical or legal contexts; in modern everyday speech, terms like 非嫡出子 (ひちゃくしゅつし) or 婚外子 (こんがいし) are more common.
He was raised as an illegitimate child.
The history book contains an account of an illegitimate prince.
婚外子 is a common modern term for a child born outside of marriage, less formal than 庶出.
Compound of 庶 (しょ, 'common, illegitimate') and 出 (しゅつ, 'birth, origin'). The exact historical derivation is uncertain, but the kanji combination directly conveys the meaning of illegitimate birth.