Definition of gecker:
(n) :
A surname.
(v) :
To make a series of stuttering throaty vocalizations (usually described as: chattering, chittering, cackling, squeaking, or yakking) in the manner of some primates, jackals, mongooses, and foxes.
(n) :
The series of stuttering throaty vocalizations (usually described as: chattering, chittering, cackling, squeaking, or yakking) in the manner of some primates, jackals, mongooses, and foxes.