rei
1. (noun) ivory, tusk, large tooth, anything of ivory, cherished possession.
I te taenga o Kāwana Parāone ki Te Tai Tokerau, ka whakawhiwhia e ia a Maihi ki tētahi taonga hīri, he rei, hei tohu i te rongomau me te kotahitanga o te iwi Pākehā me te iwi Māori (TTR 1994:42). / When Governor Browne arrived in Northland he gave Maihi an ivory seal as a token of peace and unity between Māori and Pākehā.
2. (noun) zygomatic bone, bone between the eye and ear.