<p><strong>Noun:</strong></p><ul><li>a loud, explosive, resounding noise produced by the explosive expansion of air heated by a lightning discharge.</li><li>any loud, resounding noise: the thunder of applause.</li><li>a threatening or startling utterance, denunciation, or the like.</li></ul><p><strong>Verb (used without object):</strong></p><ul><li>to give forth thunder (often used impersonally with it as the subject): It thundered last night.</li><li>to make a loud, resounding noise like thunder: The artillery thundered in the hills.</li><li>to utter loud or vehement denunciations, threats, or the like.</li><li>to speak in a very loud tone.</li><li>to move or go with a loud noise or violent action: The train thundered through the village.</li></ul><p><strong>Verb (used with object):</strong></p><ul><li>to strike, drive, inflict, give forth, etc., with loud noise or violent action.</li></ul>