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1.
A sensation of radiated cold.
When you hold your hand above a warm surface you feel the warmth. When you hold your hand above a cold surface you feel the coldth.
by Jeff McLauchlin May 12, 2006
 
2.
What the planet Hoth in the Star Wars universe should have been called due to it's extremely frigid environment.
Pignose: You know what? That's fair. I'm Pignose and this is my brother-in-law Scott. He's visiting from Hoth.
Scott: I don't know why they call it Hoth, they should call it "Coldth".
Pignose: Okay settle down.
Scott: I'm up after the band.
by Tenchi_My December 15, 2013