bunn (Norwegian Bokmål) comes from Danish bund, from Old Danish botn, from Old Norse botn, from Proto-Germanic butmaz, from Proto-Indo-European bʰudʰmḗn, from Proto-Indo-European dʰewbʰ-, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.
bunn (Norwegian Bokmål): bottom