1. (verb) to drop off, fall, fall off.
Ko ā te Pākehā rākau anake e ngahoro ana ngā rau, heoi anō tā te Māori rākau i rite ki ā te Pākehā ko te kōtukutuku, arā ko te kōnini (TP 9/1903:1). / Only exotic trees are deciduous, however the only native tree that is like exotic trees is the kōtukutuku (tree fuchsia), also called the kōnini.
2. (verb) to drop out.
Kua kaumātua kē te tangata, kua potopoto te moe, kua ngahoro ngā niho, kua kore e rangona te reka o te kai, kua māuiui noa te tinana (TTT 1/7/1928:814). / When a person is old sleep is short, the teeth have dropped out, the deliciousness of food can no longer be tasted, and the body has become quite sickly.
4. (modifier) friable, crumbly.
He oneone ngahoro (W 1971:226). / A friable soil.
5. (modifier) and upwards, or more, in excess of.
I tae pea ki te kotahi rau ngahoro a Ngāti Whakaue i haina ki taua pukapuka (KO 14/6/1884:5). / Approximately one hundred or more Ngāti Whakaue arrived and signed that document.