kupi
1. (verb) to shut (the eyes), screw up (the eyes) - shut them so hard that the skin wrinkles up around them.
Ka noho rāua, noho mataku i tō rāua mōhio āe, kua mate rāua i te wheke nei. Ka kupi ō rāua kanohi. I te roanga haere, ka wāta oho ō rāua kanohi (TWK 17:26). / The two of them sat there in fear because they knew that for sure, they would be killed by the octopus. They screwed up their eyes. After a long time they slowly opened their eyes.
2. (stative) to cover.
Kupi tonu te rangi i te pōkēao. Kua pōuri kē (TWK 18). / The sky was completely covered with dark clouds. It was already dark.