Hardened sap from trees which is used on violin bows, Bull Rider and Baseball gloves, bottoms of pointe shoes, etc. Helps retain a good grip on something, makes it not so slippery.
Dancer 1 : "Yesterday I was dancing in pointe class...and I slipped and fell on my butt..it was extremely embarrassing."
Dancer 2: "Did you get rosin from the rosin box?"
Dancer 1: "Oops, no."
Dancer 2: "Well that explains it."
by Robot No. 1 November 23, 2006
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Cozy.

Stems from an anonumous post-secret "You're cozy, Rosin", created for Canadian rock band Hedley's epic guitarist Dave Rosin. Rosin is famous for being exceptionally friendly and remembering fans' names and details about how he met them.
by nineshades November 28, 2009
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A girls name. Rosine is a very beautiful girl. She is loyal to all people and would never be a fake. She usually is thick and has nice hair. A Rosine is a persons you want to spend the rest of your life with
Person 1: What’s your name

Rosine: It’s Rosine
Person 1: You must be the one
by Barbietingz December 5, 2019
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To get hugged unexpectedly.
Jen got a rosine today during a party.
by Pharmville March 18, 2018
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When someone smokes so much Rosin their dick stays soft.
My girl is pissed!, It got nuts last night and I ended up with a mean case of Rosin Rod.
by Surf the Chaos April 12, 2016
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Those rosin chewers are everywhere.
That's one ugly rosin chewer
by rosinchewer October 2, 2009
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Boof that's been squished from some crackhead with a brain tumor.
Tarik Rosin? You mean that squished garb from that crackhead with a brain tumor? Yeah, stay away from that stuff and dont talk to that guy --- he's a goon who just lives to troll people on Instagram.
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