cannonadePronunciation: /ˌkanəˈneɪd/Definition of cannonade noun a period of continuous heavy gunfire: the French attack began with a cannonade figurativehe unleashed a cannonade of invective verb [no object] (often as noun cannonading) discharge heavy guns continuously: the daily cannonading continuedOrigin: mid 16th century: from French, from Italian cannonata, from cannone (see cannon)cannonade in other Oxford dictionaries Definition of cannonade in the US English dictionary