Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sălĭunca, ae, f., an odoriferous plant, the wild or Celtic nard: Valeriana Celtica, Linn.; Plin. 21, 7, 20, § 43; Verg. E. 5, 17; Scrib. Comp. 195; 258; Vulg. Isa. 55, 13.