rule of thumb
US /ruːl əv θʌm/
UK /ruːl əv θʌm/

1.
경험 법칙, 대략적인 규칙
a broadly accurate guide or principle, based on experience or practice rather than theory
:
•
As a rule of thumb, always save at least 10% of your income.
경험상, 항상 수입의 최소 10%는 저축하세요.
•
A good rule of thumb for cooking rice is two parts water to one part rice.
밥을 지을 때 좋은 경험상 물 2컵에 쌀 1컵이다.