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Webster 1913 Edition
Fucus
Fu′cus
,Noun.
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.]
2.
(Bot.)
A genus of tough, leathery seaweeds, usually of a dull brownish green color; rockweed.
☞ Formerly most marine algæ were called fuci.
Webster 1828 Edition
Fucus
FU'CUS
,Noun.
1.
A paint; a dye; also, false show.2.
plu. fucuses. In botany, a genus of Algae, or seaweed; the sea-wrack, &c.