Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sandăla, ae, f., a very white kind of corn, Plin. 18, 7, 11, § 62 (v. l. scandala); also called scandŭla, Edict. Diocl. 27; Isid. Orig. 17, 3, 11.