tiddlywink       
noun [ C ] uk/ˈtɪd.əl.i.wɪŋk/ us/ˈtɪd.əl.i.wɪŋk/
 挑圆片游戏用的小圆片
one of the small round pieces used in the game of tiddlywinks
  The longest distance to which a standard tiddlywink has been flicked is 3.85 metres. 挑圆片游戏里用的标准小圆片弹出的最远距离是3.85米。 
 Use a large tiddlywink to press and flick the smaller counters. 用一片较大的圆片来按压并挑拨那些较小的圆片。 
 See: tiddlywinks
 - More examples
 - That little old manhole cover looks like a tiddlywink.
 - We are each given a tiddlywink, exchangeable for a drink.
 - Passengers buy a small plastic token, like an overgrown tiddlywink, which is scanned at the gates.