Top definition
the crack that's made between two pillows that are pushed together, usually overly large pillows. It's where your head usually ends up when sleeping due to the overly large nature of the pillows. The crack can also be created from one pillow if its arranged properly.
Damn those hotel pillows were so big that I slept in the pillowcleavage all night!
by galactic asparagus January 03, 2012
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