Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† 1. ănhȳdros (ănȳdr-), i, f., = ἄνυδρος (without water), the narcissus, as thriving in dry regions, App. Herb. 55.
2. Ănhydros (Ănydr-), i, f., an island in the Ægean Sea, Plin. 5, 31, 38, § 137.