a Spanish and Portuguese unit of weight of varying value, equal to 25.37 pounds avoirdupois (9.5 kilograms) in Mexico and to 32.38 pounds avoirdupois (12 kilograms) in Brazil.
2.
a unit of liquid measure of varying value, used especially in Spain and commonly equal (when used for wine) to 4.26 U.S. gallons (16.1 liters).
Origin: 1590–1600; < Spanish < Arabic al rubʿ the fourth part, i.e., a quarter of the qintār;see quintal