Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1.farfărus, i, m.,the plant colt’s-foot, called also farfugium and chamaeleuce: tussilago, Linn.; Plin. 24, 15, 85, § 135. Also in the form farfĕrus,Plaut. Poen. 2, 1, 32; Paul. exFest. p. 88, 13 Müll. N. cr.