What is the function of the ploughshare?

A ploughshare is the cutting blade or moldboard of a plough (plough) used in agriculture to break and turn over the soil.

It is a metal blade attached to the bottom of an agricultural plough. Its primary purpose is to cut into the soil and loosen it to create furrows for crop planting.

The ploughshare is heavy and sharp enough to penetrate the soil and turn it over, breaking up any clumps and preparing a seedbed for planting. By burying plant residue and promoting the decomposition of organic matter in the soil, the ploughshare also helps to control weeds and promote soil fertility.