plough‧share  British English, 
plowshare American English /ˈplaʊʃeə $ -ʃer/
 noun [countable]1.  the broad curved metal blade of a 
plough, which turns over the soil
2.  turn/beat swords into ploughshares to stop fighting and start living in peace 
 [TahlilGaran] Dictionary of Contemporary English ▲