thundercloud

Meanings

1. 1
   noun

   a large dark cloud, usually a cumulonimbus, that produces thunder and lightning

   By noon a wall of thundercloud covered half the sky.

2. 2
   noun

   figurative: a threatening or gloomy presence

   The unresolved dispute hung over the meeting like a thundercloud.

A compound of thunder and cloud, naming the electrically charged storm cloud from which thunder is heard.

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