A crest or knot of feathers upon the head or top, as of a bird.
The New Zealand topknot, Notoclinus fenestratus
A small European flounder (Phrynorhombus regius, syn. Rhombus punctatus).
The brown topknot, Notoclinus compressus
A decorative headdress.
A decorative knot of hair on the crown of the head, sometimes having ribbons or feathers.
Several species in the genus Zeugopterus
The Norwegian topknot, Phrynorhombus norvegicus
A tuft or clump of green grass or similar verdure, forming a small hillock.