Pūrākau. 1. n. Old man.
2. Ancient legend, myth.
3. Any incredible story.
4. Ceremonies connected with making and launching a canoe. Ka oti te waka nei, ka purakautia (W. ii, 16). So ahi purakau. Katahi ka tahu i te ahi purakau ki te take o taua rakau; ka ka te ahi, ka hoatu te maramara me te mauku ki te ahi purakau, ka takutaku atu i te karakia purakau. ‖ ahi.
5. a. Double, of teeth.
6. Legendary, mythical, as in korero purakau.
Williams Dictionary