Definition of "arroba" []

• A unit of weight formerly used in Spanish-speaking countries, equal to about 11.3 kilograms (25 pounds). (noun)
• A unit of weight formerly used in Portuguese-speaking countries, equal to about 14.4 kilograms (32 pounds). (noun)
• A liquid measure formerly used in Spanish-speaking countries, having varying value but equal to about 16.2 liters (17 quarts) when used to measure wine. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "But the Indians have no scales, and accordingly for them the arroba was a thing of bulk and not of weight."
• "The arroba is a Spanish weight originally, to which no fixed standard can be assigned."
• "Just so you know in advance, the "@" symbol is called an "arroba", and it's made by keying ALT 6-4."