jitterbug/ˈd͡ʒɪtə(ɹ)bʌɡ/EtymologyFrom jitter + bug, after the 1934 Cab Calloway song “Jitter Bug”.nounA nervous or jittery person.A jazz musician or aficionado.An uptempo jazz or swing dance which embellishes on the two-step pattern and frequently incorporates acrobatic style swing steps.Synonym of diddley bow (“type of stringed instrument”).verbTo dance the jitterbug.