Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† caucălis, ĭdis, f., = καυκαλίς, an umbelliferous plant; acc. to Sprengel Caucalis orientalis, Linn.; Plin. 21, 15, 52, § 89; 22, 22, 40, § 83.