aku

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

áku

n. the back, the back portion.

n. roof of a house.

aku

n. back, wrong side.

adv. i akun, mai akun, ri akun, te...: behind, from behind, pass behind the...