noun
slug
A counterfeit coin or token used to operate a machine.
The machine rejects the metal slug.
Etymology
Projectiles and counterfeit coins extend slug meaning a solid metal piece. Its deeper origin is uncertain; the animal-name is not assumed to explain it.
More examples
- Someone tried to use a slug instead of a coin.
- The operator found several slugs in the collection box.
- The counterfeit slug jammed the slot.
Forms
slug · slugs
Similar words
- token
- A substitute for money that may be legitimate.
- counterfeit
- A fraudulent imitation more generally.