Definition of ploughshare in English:

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ploughshare

Pronunciation: /ˈplaʊʃɛː/
(US plowshare)

noun

The main cutting blade of a plough, behind the coulter.
Example sentences
  • Heavier plows with wheels, horizontal plowshares, and a moldboard were invented, which cut down on manual labor.
  • Each day I must yoke the oxen and fasten the ploughshare to the plough.
  • The Shearer brothers produced cast-iron ploughshares and from 1888 onwards wrought steel ploughshares.

Origin

Late Middle English: from plough + Old English scær, scear 'ploughshare' (related to shear).

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