Fū'cus, n.

n.; pl. Fū'cī. [Lat., rock-lichen, orchil, used as a red dye, and as a rouge for the cheeks, red or purple color, rouge, disguise, deceit.]

1. A paint; a dye; hence, false show, B. Jonson.
2. (Bot.) A genus of sea-weeds of a tough, leathery kind, and usually of a dull, brownish-green color; sea-wrack, and other species.