らんか

爛柯

表記・読み：らんか

1. 1

   go (board game)

   名詞formal or literary term
2. 2

   being so engrossed in go that one loses track of time; being so engrossed in an activity that one loses track of time

   名詞from a Chinese legend about a man who watches a game of go for so long that the handle of his axe rots away