רַב rab "big, many, much". In Amos "much" or "big" in 3:9; 5:12; 6:2 (where it also means "Great" as a title) 7:4 while in 6:2 and 8:3 it means "many"; the use in 3:15 is less simple, and is discussed elsewhere.

Rabbah, the feminine form רַבָּה is the name of the main Ammonite city (see article Rabbah) e.g. in Am 1:14.