This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. One who, or that which, shells.

n. One who, or that which, shells

n. One who shells or husks, or a tool or machine used in shelling or husking: as, a corn -sheller; pea - shellers.

n. Specifically

n. A machine for stripping the kernels of maize or Indian corn from the cob; a corn-sheller.

n. One who makes a business of opening bivalves for market; an opener; a shucker; a sticker.

n. a worker who removes shells (as of peas or oysters)

"Update 10/23/09 – the answer: A corn sheller, it was used to remove the undesirable shaped kernels of corn from the ends of ears leaving the large flat kernels thought to be the best for planting."

worker   

Heller    Keller    Seller    Teller    Weller    bestseller    cellar    dweller    eller    feller   

buckwheat    produ    earworm    gavage    likker    stix    popper    bluebottle    groundnut    jerkoff