Taranis n. : A Celtic divinity, regarded as the evil principle, but confounded by the Romans with Jupiter.

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Taxonomy
Taranis, wheel, thunder, Celtic deity, free encyclopedia, deity, Oxford University Press, thunderbolt, god of thunder, the Roman, Etymology, Dictionary of Celtic Mythology, element, Paris, British, god, Celtic Gods, search.

Defination from the web:
Taranis, as a personification of thunder, is often identified with similar deities found in other Indo-European pantheons. ... Votive Celtic wheels called Rouelles, thought to correspond to the cult of Taranis. ...