Plural of 'arco,' referring to multiple arch-shaped structures, or a place with many arches.
From Spanish/Latin 'arco' (arch); pluralized using standard Spanish conventions; often used in place names or architectural descriptions in Spanish-speaking regions.
You see this word in Spanish city names and architectural descriptions—'Los Arcos' means 'the arches,' and it's how Spanish speakers describe towns built around multiple arch structures.
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