waruwaru, v.t. Scrape, grate. He tangata kau Takarangi na Manukawehi i here ki te taura hei waruwaru kao (M. 364).
Williams Dictionary
I waruwaru rīwai au.I peeled spuds.Simple sentences: past tense - i
Kei te waruwaru rātou i ngā rīwai.They are peeling the spuds.Sentences with i - i