noun
- a marble made of steel
Usage: informal
Examples
- The kids played marbles with steelies in the schoolyard.
- He flicked his steelie across the circle to knock out the other marbles.
- Steelies were heavier than glass marbles and could break them.
- She collected colorful glass marbles but preferred playing with her trusty steelie.
- The steelie rolled smoothly across the pavement.