Webster's Revised Unabridged Dictionary · 1913

Topknot

Topknot , noun

1.
A crest or knot of feathers upon the head or top, as of a bird; also, an ornamental knot worn on top of the head, as by women.
A great, stout servant girl, with cheeks as red as her topknot. — Sir W. Scott
2.
(Zoology) A small Europen flounder (Rhoumbus punctatus). The name is also applied to allied species.