topknot

noun

1. a tuft of hair growing on the top of the head.
2. hair fashioned into a knob or ball on top of the head.
3. a tuft or crest of feathers on the head of a bird.
4. a knot or bow of ribbon worn on the top of the head.

noun

1. a crest, tuft, decorative bow, chignon, etc, on the top of the head
2. any of several European flatfishes of the genus Zeugopterus and related genera, esp Z. punctatus, which has an oval dark brown body marked with darker blotches: family Bothidae (turbot, etc)