pennyweight
/ˈpɛniˌweɪt/
noun
- A unit of weight equal to 1/20 of a troy ounce (about 1.555 grams), used for measuring precious metals and gems.
- Jewelers often use pennyweight to measure small amounts of silver.
- The gold ring weighed 12 pennyweight.
- He sold the scrap gold for $20 per pennyweight.