Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† orchĭon, ii, n., = ὄρχις, testiculus, a plant, called also testiculata, App. Herb. 82.
† orchis, is, f., = ὄρχις
Orchus, i, m., = Orcus: Orchi traditus thesauro, Naev. ap. Gell. 1, 24, 2.