Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
cērussa, ae. f., white-lead, ceruse (used by painters, and by women for making the skin white; also in medicine, and in large doses as a poison), Plin. 28, 9, 33, § 129; 34, 18, 54, § 175 sq.; Vitr. 7, 12, 1; Cels. 5, 27, 15; Plin. 28, 9, 33, § 129; 35, 6, 19, § 37; Plant. Most. 1, 3, 101; Ov. Med. Fac. 73; Mart. 10, 22, 2; Pall. Aug. 11, 3.