Webster's Revised Unabridged Dictionary · 1913

Arab

Arab (?; 277) , noun

[Probably ultimately from Hebrew arabah a desert, the name employed, in the Old Testament, to denote the valley of the Jordan and Dead Sea. Arabic Arab, Hebrew arabi, arbi, arbim: compare French Arabe, Latin Arabs, Greek {not transcribed}.]

One of a swarthy race occupying Arabia, and numerous in Syria, Northern Africa, etc.
The ragged outcasts and street Arabs who are shivering in damp doorways. — Lond. Sat. Rev