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

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n. The cutting blade of a plow; a share.

n. The cutting edge of a plow, typically a metal blade.

n. The share of a plow, or that part which cuts the slice of earth or sod at the bottom of the furrow.

n. The share of a plow, or that part which cuts the ground at the bottom of the furrow, and raises the slice to the mold-board, which turns it over; the sock of a plow. See first cut under plow.

n. In anatomy, the vomer.

n. a sharp steel wedge that cuts loose the top layer of soil

"The Volna, that formidable Cold War sword, had proved a less than reliable plowshare, making for a failure that was bitterly beside the point: the chemically propelled brute-force rocket was the trouble, not the beautiful Icarian blades that never got a chance to be tested."

ploughshare   

wedge   

shear    scar    scallop   

share    plow    plough   

plowshares    ouzo    cookstove    plows    chromo