The Berthouville hoard was discovered when a ploughshare struck a Roman tile.
From the en.wikipedia.org
Other species suffer from illegal trade, as in the case of the ploughshare tortoise.
From the sciencedaily.com
They also had a more derived pygostyle, with a ploughshare-shaped end.
From the en.wikipedia.org
The plough uses a moveable weight to hold the ploughshare in position.
From the en.wikipedia.org
The basic plough with coulter, ploughshare and mouldboard remained in use for a millennium.
From the en.wikipedia.org
Eric Goode and his team hope to mate two ploughshare tortoises, one of the rarest species in the world.
From the latimes.com
In late March, 54 ploughshare tortoises made it as far as Thailand before being seized by authorities.
From the sciencedaily.com
Ploughshare tortoise, found only in Madagascar, is being collected out of existence by illegal wildlife traffickers.
From the sciencedaily.com
The ploughshare spread the cut horizontally below the surface, so when the mouldboard lifted it, a wider area of soil was turned over.
From the en.wikipedia.org
More examples
Plowshare: a sharp steel wedge that cuts loose the top layer of soil
Ploughshares is an American literary magazine founded in 1971 by DeWitt Henry and Peter O'Malley in The Plough and Stars, an Irish pub in Cambridge, Massachusetts. Since 1989, Ploughshares has been based at Emerson College in the heart of Boston. ...
The large pointed blade of a plow which cuts a slice of earth.