turuna

Bingham: Hiram Bingham, A Gilbertese-English Dictionary (1908, 1953). American Board of Commissioners for Foreign Missions.
Sabatier: Ernest Sabatier, M.S.C., Dictionnaire Gilbertin-Français (1954), translated by Sr. M. Oliva as Gilbertese-English Dictionary (1971). South Pacific Commission Publications Bureau.

Bingham

turúna

vt. to accidentally subject some part of the body to being struck upon in a fall.

turuna

from. turu:

vt. to apply strongly, to force one part against another, to strain oneself.