Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
laena, ae, f., = χλαίνη, a lined upper garment, a cloak, mantle: laena vestimenti genus habitu duplicis. Quidam appellatam existimant Tusce, quidam Graece, quam χλανίδα dicunt, Paul. ex Fest. p. 117 Müll. Usually worn by the flamens over the toga, Cic. Brut. 14, 56; Serv. Verg. A. 4, 262. Also by persons of distinction,-Verg. l. l.; Sil. 15, 424; Pers. 1, 31; Juv. 5, 131; 3, 283; v. Dict. of Antiq.