noun (common) (futsuumeishi) groan;moan

noun (common) (futsuumeishi) growl;snarl;roar;howl;bellow

noun (common) (futsuumeishi) hum (e.g. of a motor);buzz;drone;wiz

noun (common) (futsuumeishi) device attached to a kite that makes a humming sound when the kite is flown

noun (common) (futsuumeishi) physics beat (acoustic interference)