gound

rähmä puhekieltä mucus Mucus produced by the eyes during sleep.
2002, Peter Novobatzky, Ammon Shea, Depraved and Insulting English:

Typical terms invented to fill this vacuum include sleepies, eye-snot, and bed-boogers. The correct word, however, is gound. "Collin was never one to dillydally in the morning: by the time he had rubbed the gound out of his eyes he was usually on his third Manhattan."

Your eyes get dried mucus in them while you sleep. The stuff is sometimes called bed-boogers or eye-snot, but to be accurate, it is "gound".

The gunk that collects in the corners of the eyes. Gound is the perfect example of a word that is practically useless, and yet still nice to know.