3. (noun) topknot.
See also ruru
4. (noun) crest (of a bird).
Tapaina ai te hoiho mō tana tangi, te pokotiwha mō tōna koukou kōwhai me ōna tukemata tāhei, ko te kororā mō tana tangi (Te Ara 2012). / The yellow-eyed penguin was named for its call, the Fiordland crested penguin for its yellow crest and eyebrow stripes and the blue penguin for its call.