An unusually large, free-flowing amount of chest hair which results in a resemblance of a bird's nest on one's chest.
Hey Bruce, that's a hell of a chestnest you got there!

I wish I could grow a chestnest like Bruce, but I am doomed to living life with a small, wiry patch of chest hair.
by aramrod July 19, 2016
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Chestnest: the warm spot of the middle of the chest, where one can nuzzle and fall asleep on. Usually the male chest, but limited to.
Male: Nah, we just listened to music until she fell asleep in my chestnest. OR Female: Give me a minute, I dropped an mnm down my top, and now it's stuck in my chestnest.
by Dontbsquare November 10, 2015
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