To make slight cracks, or sudden sharp, explosive noises, rapidly or frequently repeated; crepitate: as, burning thorns crackle.To quaver in singing.In lute-playing, to play the tones of a chord in succession instead of simultaneously. See arpeggio.To cover with a network of minute cracks, as porcelain or glass.n. One of a series of small, sharp, quickly repeated noises, such as are made by a burning fire; crackling.n. A small crack; specifically, a network of cracks characterizing the surface-glaze of some kinds of porcelain and fine pottery.n. In pathology, same as crepitant rále (which see. under rále).