Green’s Dictionary of Slang

1. (US) to sell or peddle on the streets.

1979		Maledicta III:2 154: arab vt Sell or peddle as a huckster.
1997		Simon & Burns Corner (1998) 321: He used to A-rab on a produce cart.

2. to work as a street bookmaker.

1952, 1955

in DARE.