On-line Te Reo Māori Dictionary

Mapu. 1. v.i. Whiz, hum. Ka mapu te potaka.

2. Sob, sigh. Oho ake ki te ao, mapu kau au ki taku moenga (M. 145).

3. Pant. Tangi ana te mapu i te omanga.

4. Shout.

5. Flow freely. Te hua roimata e mapu ra i aku kamo (S. ii, 9).

6. a. Awash. Ko au e kau ki te kohatu ra e mapu mai ra i te moana.

7. Flood of the tide. He tai mapu.

Williams Dictionary