1. (verb) to be bent, concave, curved, twisted.
Ka hakoko te hihi aho, e whakawhiti ana mai i te hau takiwā ki te wai. Ka hakoko te hihi aho nā te mea he pōturi ake te ngaru aho i roto i te wai, tēnā i te hau takiwā (RP 2009:183). / A ray of light bends when travelling from air into water. It bends because the light wave travels slower in water than it does in air.
2. (modifier) be bent, concave, curved, twisted.
Me pereti hakoko, kia kore ai e maringi te wairanu (PK 2008:68). / It should be a curved plate so that the gravy doesn't spill.
3. (noun) cramp.
I pāngia ia e te hakoko. / She was afflicted with cramp.
4. (noun) adult muttonbird, adult sooty shearwater, Puffinus griseus, - a grey-faced petrel with a long slender bill hooked at the tip and silvery-grey flash on the underwings, which nests in underground burrows.
(Te Pihinga Textbook (Ed. 2): 14-16;)