Wordnet 3.0
NOUN (2)
1.
a unit of weight used in some Spanish speaking countries;
2.
a liquid measure (with different values) used in some Spanish speaking countries;
The Collaborative International Dictionary of English v.0.48:
Arroba \Ar*ro"ba\, n. [Sp. and Pg., from Ar. arrub, ar-rubu, a
fourth part.]
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.
[1913 Webster]
2. A Spanish liquid measure for wine = 3.54 imp. gallons, and
for oil = 2.78 imp. gallons.
[1913 Webster]
WordNet (r) 3.0 (2006):
arroba
n 1: a unit of weight used in some Spanish speaking countries
2: a liquid measure (with different values) used in some Spanish
speaking countries