Lewis & Short

Ăpătūrŏs, i, n., a place on the Cimmerian Bosporus, with a temple of Venus Apaturia, Plin. 6, 6, 6, § 18.
Hence, Ăpă-tūrĭa, ōrum, n., a festival of Venus Apaturia, Tert. Apol. 39.