jacks

British  

/ dʒæks /

noun

1. Sometimes called: knucklebones.  (functioning as singular) a game in which bone, metal, or plastic pieces ( jackstones ) are thrown and then picked up in various groups between bounces or throws of a small ball

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Etymology

Origin of jacks

C19: shortened from jackstones , variant of checkstones pebbles

Example Sentences

Watching young Reiner play jacks in the living room, he thought the kid was hilarious.

From Los Angeles Times

I feel like doing jumping jacks or a backflip or participating in an ice cream–eating contest.

From Literature

“Simon says, jumping jacks, I don’t care what you call it! Now step aside and let me pass.”

From Literature

We would explore the forest, climb trees, or play jacks and kickball.

From Literature

I count seven small hydraulic jacks attached to the bottom of Cleopatra’s Needle.

From Literature