When someone acts homosexual or just plain is. It's like calling someone a fag, but in a more discreet way.
Elizabeth: Are you friends with that kid james?
John: Him? no way, i'm pretty sure he's for the rainbow.
by Flying narwhal party October 29, 2010
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(rān′bō′ éd)

When a doof's atmosphere elevates to such an extreme level that it causes the releases of natural endorphins in the brain. These endorphins, combined with the enriched nature of your soul and a mixture of substances as copious as they are numerous, combine into an potent cocktail causing a blissfully euphoric emotional state in which one's identity and conscience merge into the festivals collective-being. Often expressed by dancing.
I was at Rainbow Serpent Festival with the rework crew last year, everyone was so rainbowed.
by howsyarainbow?havingagoodtime? February 4, 2014
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A phrase that is often said following something homosexual. Another way of saying "No Homo" or "Pause"
by Hakhmeed August 16, 2008
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when different girls each put on different color lipsticks and suck a guys dick and leavs a mark of the lipstick color on it
"yo dude i went rainbowing last night with jess, jess, lis, and kira!"
by Jess November 14, 2003
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Having the appearance, ambience, or majesty of a rainbow.
“The light reflecting off those bubbles is very rainbowic.”
by Incrediboy October 19, 2018
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