topknot /ˌtɒpˈnɒt/noun 11forms 1 noun11 •A decorative knot of hair on the crown of the head, sometimes having ribbons or feathers.A great, stout servant girl, with cheeks as red as her topknot. — 1815 •A decorative headdress. •A crest or knot of feathers upon the head or top, as of a bird. •Any fish in one of several genera. •The New Zealand topknot, Notoclinus fenestratus •The Norwegian topknot, Phrynorhombus norvegicus •The brown topknot, Notoclinus compressus •Several species in the genus Zeugopterus •A small European flounder (Phrynorhombus regius, syn. Rhombus punctatus). •(Australia, informal) A crested pigeon, or, a topknot pigeon. •(Australia) The wool shorn from the crown of a sheep.Dan flung away the belly wool with a flash of the hand; ripped off the ‘top knot’, snipped a bit of wool from round the horns[.] — 1911 formstopknots