Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† argilla, ae, f., = ἄργιλλος (ἀργής, white), white clay, potter’s earth, argil; cf. Col. 3, 11, 9; Pall. 1, 34, 3: homulus ex argillā et luto fictus, * Cic. Pis. 25: glandes ferventes ex argillā fusili, * Caes. B. G. 5, 53 (ἐξ ἀργίλλης τετηγμένης, Paraphr.): idoneus arti Cuilibet, argillā quidvis imitabitur udā, * Hor. Ep. 2, 2, 8: Tenuis ubi argilla et dumosis calculus arvis, * Verg. G. 2, 180.