noun
tiddlywinks
TID-lee-winks/ˈtɪdliwɪŋks/
A game in which small disks are flipped into a cup.
We play tiddlywinks by flipping small disks into a cup.

Etymology
The game’s name is probably an arbitrary baby-talk formation. The source also mentions an earlier slang tiddly-wink meaning an unlicensed drink shop, without establishing a connection to the game.
More examples
- She challenges her brother to a game of tiddlywinks.
- In tiddlywinks, players press a larger disk against smaller ones to launch them.
- We clear the table for tiddlywinks after dinner.
Forms
tiddlywinks