Dictionary
rule of thumb
Definition of RULE OF THUMB
1
: a method of procedure based on experience and common sense
2
: a general principle regarded as roughly correct but not intended to be scientifically accurate
ADVERTISEMENT
First Known Use of RULE OF THUMB
1692
Rhymes with RULE OF THUMB
Browse
Next Word in the Dictionary: rule of two and threePrevious Word in the Dictionary: rule of threeAll Words Near: rule of thumb
ADVERTISEMENT
Seen & Heard
What made you want to look up rule of thumb? Please tell us where you read or heard it (including the quote, if possible).