baʊns dæns ˈdɑːn.sɪŋ spɹɪŋ a light, self-propelled movement upwards or forwards taking a series of rhythmical steps (and movements) in time to music an abrupt transition a successful leap from college to the major leagues (genetics) a mutation that drastically changes the phenotype of an organism or species (geology) the leaping movement of sand or soil particles as they are transported in a fluid medium over an uneven surface