Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. fămŭlus, i (an archaic form famul, Enn. ap. Non. 110, 9; Lucr. 3, 1035 (al. 1048); for which cf. in the Oscan ‡ famel: famuli origo ab Oscis dependet, apud quos servus famel nominabatur, unde et familia vocata, Paul. ex Fest. p. 87, 5 Müll.), m., and fămŭla, ae (gen. plur.: famulum, Stat. S. 3, 4, 57; Val. Fl. 1, 752; 3, 20; 282) f. [Sanscr. root dhā, to lay, found; Gr. τί-θη-μι; Osc. faama, house, v. Curt. Gr. Etym. p. 254; cf. Corss. Ausspr. 1, 183], a servant, attendant; a maid-servant, handmaid (class.).
2. fămŭlus, a, um, adj. [1. famulus], serving, serviceable, servile (poet.; perh. not ante-Aug.): aquae, Ov. F. 1, 286: turbae, Sil. 13, 360: dextrae, Luc. 4, 207: manus, Sil. 10, 647: artus, Val. Fl. 1, 749: vertex, Ov. Pont. 2, 2, 80: catenae, Claud. in Ruf. 2, 386: ripae, id. III. Cons. Hon. 203.