overkeeper
n.— «Investigating local records in Erwin, researching state archives in Nashville and absorbing everything he could find online, Carlton immersed himself in the Sparks Circus and the events that followed after a five-ton elephant named Mary crushed to death an unsavory drifter named Red Eldridge, who was charged with her training and handling (a job known in circus parlance as “overkeeper”).» —“Elephantine Justice” by Martin Brady Nashville Scene (Tennessee) Mar. 8, 2007. (source: Double-Tongued Dictionary)