wedge something solid that is usable as an inclined plane (shaped like a V) that can be pushed between two things to separate them
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Wiktionary
Substantiv
plowshare -
The cutting edge of a plow, typically a metal blade.
Wikipedia
A plowshare (or ploughshare) is a component of a plow. It is the cutting or leading edge of a moldboard which closely follows the coulter (one or more ground-breaking spikes) when plowing. The plowshare itself is often a hardened blade dressed into an integral mouldboard so making a unified combination of plowshare and moldboard, the whole being responsible for entering the cleft in the earth (made by the coulter's first cutting-through) and turning the earth over.
