worthrule
nounUK /ˈwɜːθruːl/
US /ˈwɝːθruːl/
A worthrule is a special rule that tells you how much something is worth.
The teacher made a worthrule for trading stickers fairly.
OTHER MEANINGS
2. A rule that decides how valuable something is in a game.
In our game, the worthrule says a gold coin is worth ten silver ones.
3. A way to judge how good or useful something is.
The club's worthrule helps members pick the best books to read.
4. A standard used to compare the value of two things.
We used a worthrule to see which toy was the better trade.