arroba Meaning, Definition & Usage

  1. noun a unit of weight used in some Spanish speaking countries
  2. noun a liquid measure (with different values) used in some Spanish speaking countries

WordNet

Ar*ro"ba noun
Etymology
Sp. and Pg., from Ar. arrub, ar-rubu, a fourth part.
Definitions
  1. 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.
  2. A Spanish liquid measure for wine = 3.54 imp. gallons, and for oil = 2.78 imp. gallons.

Webster 1913