'Fucus' definitions:

Definition of 'fucus'

From: WordNet
noun
Any member of the genus Fucus

Definition of 'Fucus'

From: GCIDE
  • Fucus \Fu"cus\, n.; pl. Fuci. [L. rock lichen, orchil, used as a red dye, red or purple color, disguise, deceit.]
  • 1. A paint; a dye; also, false show. [Obs.] [1913 Webster]
  • 2. (Bot.) A genus of tough, leathery seaweeds, usually of a dull brownish green color; rockweed. [1913 Webster]
  • Note: Formerly most marine alg[ae] were called fuci. [1913 Webster]