rehu
1. (noun) long traditional flute - with a closed top and a transverse blowing hole and finger holes like a pōrutu.
(Te Māhuri Textbook (Ed. 2): 168;)
Ko ngā wheua o te hunga maitai i patua nei he mea mahi hei tīrou kai, ā, ko ngā wheua o ngā hūhā he mea mahi hei tōrino, arā, hei rehu (TAH 51:17). / The bones of the foreigners who had been killed were made into forks for picking up food, and the thigh bones were made into flutes.
2. (noun) recorder (musical instrument) - probably best distinguished from the traditional flute described above by adding the word Pākehā.