Top Definition
when two people have sex during the winter season while wearing all of their winter gear (which may include but is not limited to their scarfs, hats, jackets, sweaters, snow boots etc.)
1. I had a winter splinter the other day and that shit felt so DAMN good but FUCK...I was hot as hell!

2. He looked so good, I just couldn't wait to take our clothes off...so we winter-splintered it real quick.
by BlackPanther415 March 04, 2009

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