Definition of corncobs:
(n) :
The central cylindrical core of an ear of corn (maize) on which the kernels are attached in rows.
(n) :
(informal) A yokel.
(v) :
(transitive, US, Internet slang) To defeat (someone) who then refuses to admit defeat.
(v) :
(intransitive, of turbines and rotor blades) To disintegrate by the blades becoming severed from the axis