The number fourth or 4; a quarter or fourth part of something; a room in a house; a historical Spanish coin.
From Latin 'quartus' (fourth), preserved directly in Spanish and used to indicate any fourth division, quarter, or the numeral 4.
Latin number words like 'quartus' scattered through European languages—'quarter,' 'cuarto,' 'quart,' 'fourth'—all trace back to how Romans organized their world into fourths!
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