makerukeru

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

m'akérukeru

vi. make a crunching sound in eating, or a nibbling or gnawing sound as a rat.

n. gnawing or nibbling sound.

makerukeru

n. a crunching sound.

vc. kamakerukeru: to produce...