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Definition of waiau
waiau
/ˈwaɪ.aʊ/
wai · au
waiau Lexical Profile
CEFR
C2
Grade
9
Tier
3
Usage
Rare
• noun
1
New Zealand A major river in the Southland region of New Zealand's South Island, serving as the region's largest river and a crucial source for hydroelectric power.
2
New Zealand A rural township situated in the Canterbury region of New Zealand's South Island, located on the northern bank of the Canterbury Waiau River.
Word Nuance & Usage
Waiau is a common geographical name in New Zealand, which can cause confusion as it refers to at least three distinct major rivers across the North and South Islands, as well as a township.
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Waiau. In Wordmom Dictionary. Retrieved Oct 16, 2026, from https://wordmom.com/dictionary/waiau