lightly rolling (of a small and round thing) ; pleasant, high-pitched sound (e.g. bell, young woman's laughter) ; changing frequently (e.g. conversation, plans); (occurring) in rapid succession (e.g. sumo wrestlers being defeated); fickly; in a fickle manner ; roly-poly ; chirp chirp (sound of insects) ; ribbit ribbit (sound of frogs); croak croak ; roller; lint roller; paint roller