Definition of arroba
1 : an old Spanish unit of weight equal to about 25 pounds
2 : an old Portuguese unit of weight equal to about 32 pounds
Origin and Etymology of arroba
Spanish & Portuguese, from Arabic al-rubʽ, literally, the quarter
First Known Use: 1555
Seen and Heard
What made you want to look up arroba? Please tell us where you read or heard it (including the quote, if possible).