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Noun: ploughshare  'plaw,shehr
Usage: Brit, Cdn (US: plowshare)
  1. A sharp steel wedge that cuts loose the top layer of soil
    - plowshare [N. Amer], share

Derived forms: ploughshares

Type of: wedge

Part of: moldboard plow [N. Amer], mouldboard plough [Brit, Cdn]

Encyclopedia: Ploughshare