Targum zu Bamidbar 22:5

And he sent unto Laban the Aramite, who was Bileam, (so called because he it was) who sought (Biluva) to swallow up (Amma) the people of the house of Israel: the son of Beor, who was insane from the vastness of his knowledge; and would not spare Israel, the descendants of his sons and daughters: and the house of his habitation in Padan was at Pethor, a name signifying an interpreter of dreams. It was built in Aram upon the Phrat, in a land where the children of the people worshipped and adored him. (To him did Balak send) to call him, saying: Behold, a people hath come out of Mizraim, and, lo, they cover the face of the earth, and are encamped over against me.