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rob [Arabic]

In Egypt, a unit of dry capacity, = 8.25 liters (about 7.49 U.S. dry quarts). In the 19ᵗʰ century, about 7.64 liters. Also romanized as rub^c, roub, rab'a, and roubouh.

Not to be confused with the smaller rub^ca.

Socrates Spiro Bey.
An English-Arabic Vocabulary of the Modern and Colloquial Arabic of Egypt. 3rd edition.
Cairo: Elias’ Modern Press, 1929.

Page xi.

Saâdeddine Bencheneb.
Mesures et poids actullement en usage en Egypte.
Bulletin des études arabes, vol. 12, page 106 (Sept-Dec 1952.)