cornsheller

from The Century Dictionary.

• noun Corn-shellers range in capacity from 30 bushels an hour in hand-machines to 250 bushels an hour in power-machines. Some power-machines clean the shelled corn by a blast from a fan and elevate it to a wagon-box or grain-car, and deliver the cobs to an elevator which stacks them at a distance from the machine. Others deliver the clean corn to sacks. Power-machines are also provided with long conveyers for collecting the unshelled corn and conveying it to the sheller. All, both stationary and portable, can be operated by belting or gearing from a horse-power machine placed in the field near by, or by a belt from a portable motor.
• noun A machine for shelling Indian corn—that is, removing the grain from the ear.

from the GNU version of the Collaborative International Dictionary of English.

• noun A machine that separates the kernels of corn from the cob.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A machine that separates the kernels of corn from the cob.