The Collaborative International Dictionary of English v.0.48:

Ashtoreth \Ash"to*reth\, n.; pl. Ashtaroth.
   The principal female divinity of the Ph[oe]nicians, as Baal
   was the principal male divinity. --W. Smith.
   [1913 Webster]

Easton's 1897 Bible Dictionary:

Ashtaroth
   a city of Bashan, in the kingdom of Og (Deut. 1:4; Josh. 12:4;
   13:12; 9:10). It was in the half-tribe of Manasseh (Josh.
   13:12), and as a Levitical city was given to the Gershonites (1
   Chr. 6:71). Uzzia, one of David's valiant men (1 Chr. 11:44), is
   named as of this city. It is identified with Tell Ashterah, in
   the Hauran, and is noticed on monuments B.C. 1700-1500. The name
   Beesh-terah (Josh. 21:27) is a contraction for Beth-eshterah,
   i.e., "the house of Ashtaroth."


Hitchcock's Bible Names Dictionary (late 1800's):

Ashtaroth, Ashtoreth, flocks; sheep; riches