region in Central Europe, perhaps ultimately from Lithuanian galas "end, peak," in reference to the Carpathian Mountains which rise there, or from the root of Gaul. The region in northwestern Spain of the same name is from the ancient Roman province of Gallaecia, which is perhaps from the Celtic root cala "watercourse," or else it, too, might be from the root of Gaul. Related: Galician (1749 of Spain, 1835 of Eastern Europe).

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Definitions of Galicia from WordNet

Galicia (n.)
a region (and former kingdom) in northwestern Spain on the Atlantic and the Bay of Biscay;