ploughshare

English Thesaurus

1. a sharp steel wedge that cuts loose the top layer of soil (noun.artifact)

hypernym	:	wedge,
definition	:	something solid that is usable as an inclined plane (shaped like a V) that can be pushed between two things to separate them (noun.artifact)

part meronym	:	moldboard plow, mouldboard plough,
definition	:	plow that has a moldboard (noun.artifact)