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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Spanish and Portuguese arroba, from Old Spanish arroua and Old Galician-Portuguese arrova, from Andalusian Arabic and Arabic اَلرُّبْع (ar-rubʕ, “one-fourth”) in reference to its making up one fourth of a quintal.
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Classic usage
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