buyingrule
nounUK /ˈbaɪɪŋ ruːl/
US /ˈbaɪɪŋ ruːl/
A buying rule is a simple rule that tells you when and how to buy something.
Our family has a buying rule: we never buy toys unless we have saved enough money first.
OTHER MEANINGS
2. A store's official rule about how customers can buy its products.
The shop's buying rule says you must be over eighteen to buy fireworks.
3. A personal habit or limit someone follows when spending money.
His buying rule is to wait one day before buying anything expensive.
4. A rule in a game about what players are allowed to purchase.
In this board game, the buying rule lets you buy only one property per turn.