Okgarikoboshi

...It was named "Futou-o", meaning immortality, because it always gets up even if it is rolled. It was introduced to Japan in the late Ming Dynasty and during the Muromachi period, and was originally called Futou-o, but it was eventually transformed into a child-like koboshi and became a children's toy, also called "okiagari-koboshi" or "okyagarikoboshi". Koboshi means child, and a verse from a ko-mai dance from that time reads, "There are people who are inexperienced, okiagari-koboshi, furi-tsuzumi, temari and odoru-mari, koyumi", and it is known that it was one of the representative toys of the Muromachi period. ...

*Some of the terminology that refers to "Okiyagarikoboshi" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…転がしても必ず起き上がる姿から不老不死の意味で〈不倒翁〉と名づけられた。明末に室町時代の日本に移入され，最初は不倒翁の名で呼ばれたが，やがて童形の小法師につくり変えられ，子どもの玩具となり〈おきあがりこぼし〉〈おきゃがりこぼし〉ともいった。小法師は子どもの意で，当時の小舞の一節に〈いたいけしたる者あり(略)起上り小法師，ふりつづみ，手まりやおどるまり小弓〉とあり，室町時代の代表的な玩具の一つであったことが知られる。…

※「おきゃがりこぼし」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報