Top Definition
1. (n., archaic) A synonym for a white-noise generator.

2. (n.) A sleeping surface used by musicians, writers and other broke-ass twenty-somethings consisting of whatever blankets, cushions and pillows (no mattress) they can afford stuffed into a pile in the corner of a room of their apartment, as they are unable to afford a bed.
1. I can only sleep when you're gone if the sleep machine is set to waterfall, Rico.

2. Well, it's 5 AM and I've done nothing productive, time to crawl into the sleep machine and be depressed until I fall unconscious.
by Allen Wren November 18, 2010

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