noun

thunderhead

thunderhead, cumulonimbus cloud

Dark thunderheads gathered on the horizon.

Dark thunderheads gathered on the horizon.

a thunderhead ((as a noun)) a large storm cloud We saw a massive thunderhead in the distance.

Synonyms: storm cloud, cumulonimbus

From 'thunder' + 'head'. It refers to the large, towering top part of a cumulonimbus cloud, which looks like a head.

Picture the giant 'head' of a cloud that produces 'thunder'.

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