Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
rīca, ae, f., a veil to be thrown over the head, worn by the Roman women when sacrificing, Varr. L. L. 5, § 130 Müll.; Plaut. Ep. 2, 2, 48; Lucil., Novius, and Serenus ap. Non. 539, 18 sq.; Massur. Sabin. ap. Gell. 10, 15, 28; Gell. 6, 10, 4; Fest. pp. 288 and 289 Müll.