Rautupu (i), rautipu, v.t. Retaliate, kill in revenge. E kore to mate e wawe te rautupu (Your death will not be speedily avenged) (M. 33).
Williams Dictionary
Rautupu (ii), n. A thunderstorm of a certain kind, or the personification thereof. Ko rautupu, he whaitiri ano tenei.—Ko Whaitiri-pakapaka, ko te Aputahi, ko Urukaraerae, ko Rautupu, ko nga take tena o te hau, o te ua. = ruatapu.
Williams Dictionary