Kai-Awase

貝合わせ

A concentration game with clamshells that started in the Heian period. It was originally called Kai-Ooi (貝覆い) and later called Kai-Awase in the Edo period. However, the word is frequently used as a slang term for "Tribadism".

See also

• Wikipedia article (JP)
• Tag Group:Board(?) Games