sparrow dominoes

noun2

1. •
   The game of mahjong.

   • Even "Mah-Jongg," for example, is called "sparrow dominoes"—and very rightly, since that is what the Chinese word means to the Chinese. — 1935
2. •
   [plural only] The tiles used in this game.

   • There is probably no town in China where the click of the Sparrow dominoes is so little heard. — 1921