adj. Derived from the term "bloody-hand", which was one of four kinds of offences in the king's forest, by which the offender is supposed to have killed a deer. In Scotland, in such like crimes they say "Taken in the fact, or with the red hand".
- Thomas Blount's Law Dictionary and Glossary, 1717

In modern times, this term refers to catching someone in the act of doing something they aren't supposed to do.
Hah! I knew it was you stealing the cookies. I caught you red handed!
by Markus Melarkus September 29, 2005
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The exact moment of seeing a person doing illegal acts.
Caught red handed! You're under arrest for vandalism, stealing, smoking indoors, and driving drunk!
by GageTheDictionaryGeek June 04, 2016
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When someone is striked on their (often bare) back with the palm of the hand, leaving a red imprint or red hand on their back. Can be done in the changing rooms or any other opportunity
He was getting changed and lookin the other way, so i gave him a red hand!
by The Anon September 19, 2008
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When a young Mexican boy reaches the bottom of his most recent bag of Hot Cheetos and the spicy Cheeto powder coats his little brown digits.
"Jose Luis don't touch the babies while you are red handed, mijo!"
by greathips July 27, 2018
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When you finger a girl whilst on their period
Girl: Are you sure you want to do this?
Guy: Sure, I love getting red hands
by Kidjeff December 20, 2015
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1. The inmate is a red hand. He was caught while stealing money from the till.
2. The red hand was sentenced to life.
by uttam maharjan July 31, 2011
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When you finger a girl on her period then proceed to masturbate with the same hand without cleaning off her period blood
My girlfriend caught me doing a red hand with her sister.
by OG s3a n0od13 June 18, 2017
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