weta Syllabification: (we·ta)Pronunciation: /ˈwetə/Definition of weta noun a large brown wingless insect related to the grasshoppers, with long spiny legs and wood-boring larvae, found only in New Zealand. Family Stenopelmatidae: several genera, including Deinacrida (the giant wetas) Origin: mid 19th century: from Maoriweta in other Oxford dictionaries Definition of weta in the British & World English dictionary