Ngaru (i), n. 1. Wave of the sea. Ka hoki taua nga ngaru e huhuka mai o Rewatu (M. 126). Ngaru roa was applied to a body of men straggling into a long line on the march.
2. Corrugation. Me te mea ko nga ngaru o tona takapu.
ngarungaru, a. Rough with waves.
Williams Dictionary
Ngaru (ii), n. Some obstruction supposed to be in the nose of a new-born child. ‖ J. xvi, 8. Ruia to tamaiti, kia heke te ngaru, kia taka ki waho.
Williams Dictionary