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]

WordNet (r) 3.0 (2006):

Ashtoreth
    n 1: an ancient Phoenician goddess of love and fertility; the
         Phoenician counterpart to Ishtar [syn: Astarte,
         Ashtoreth]