Meaning of the word "rule of thumb" in English

What does "rule of thumb" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

rule of thumb

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

Idiom

1.

a broadly accurate guide or principle, based on experience or practice rather than theory

Example:
As a rule of thumb, always save at least 10% of your income.
A good rule of thumb for cooking rice is two parts water to one part rice.
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