noun pl. fuci fu′ci′ (-sī′) or fucuses fu′·cuses

1. Obsolete
   1. a kind of paint for the face
   2. any paint or dye
2. any of a genus (Fucus, order Fucales) of brown algae with a flattened and forking plant body that bears swollen bladders

Etymology: ModL < L, rock lichen; also, red or purple paint obtained from it < Gr phykos, rock lichen, rouge < Sem, as in Heb puch, cosmetic for the eyes