also: わこ
noun
Archaic or literary term for 'my child', used in classical Japanese. In modern Japanese, 私の子供 or うちの子 are standard.
古い和歌に「吾子は宝」と詠まれている。
In an old waka poem, it is written, 'My child is a treasure.'
Kana spelling for the rare reading わこ; included as a search aid.
The exact derivation is uncertain; 吾 (a, wa) is an archaic first-person pronoun, and 子 (ko) means 'child'. The readings あこ and わこ are old combinations meaning 'my child'.