one-per-person rule
noun phraseUK /wʌn pɜː ˈpɜːsən ruːl/
US /wʌn pɜr ˈpɜrsən rul/
A rule that says each person can have only one of something.
The teacher made a one-per-person rule so everyone could get a turn on the swing.
RELATED WORDS
OTHER MEANINGS
2. A guideline at an event that each guest may take only one item from a shared supply.
At the party, the one-per-person rule kept the goodie bags from running out.
3. A policy in a store or sale that limits each customer to buying a single unit of a product.
The shop put a one-per-person rule on the limited-edition toy.
4. A classroom or game rule ensuring each player gets exactly one turn or piece.
During the board game, the one-per-person rule stopped anyone from grabbing two tokens.