Astrologer

(Dan 1:20; Dan 2:2, Dan 2:10, Dan 2:27, etc.) Heb. ‘ashshaph’, an enchanter, one who professes to divine future events by the appearance of the stars. This science flourished among the Chaldeans. It was positively forbidden to the Jews (Deut 4:19; Deut 18:10; Isa 47:13).

From Easton’s Bible Dictionary (1897), by Matthew George Easton.