Smith's Dictionary
(multitude) a town in the territory, perhaps on the boundary, of Issachar. (Joshua 18:20) only.
International Standard Bible Encyclopedia
rab'-ith (ha-rabbith; Codex Vaticanus Dabeiron; Codex Alexandrinus Rhabboth): A town in the territory of Issachar (Jos 19:20) which is probably represented today by Raba, a village in the southern part of the Gilboa range and North of Ibzaq. The "ha" is, of course, the definite article.