·noun A Spanish liquid measure for wine = 3.54 imp. gallons, and for oil = 2.78 imp. gallons.
II. Arroba ·noun A Spanish weight used in Mexico and South America = 25.36 lbs. avoir.; also, an old Portuguese weight, used in Brazil = 32.38 lbs. avoir.
A Portuguese commercial weight of 32 lbs. Also, a Spanish general wine measure of 4-1/4 English gall...
The Sailor's Word-Book