The company ploughs back its profits into research and development.

He ploughs through the pile of paperwork on his desk.

Farmers use trench-ploughs to dig deep furrows in the field.

Snow ploughs are used to clear snow from roads.

Scotch ploughs are commonly used in agricultural fields.

The farmers used mole ploughs to improve the drainage in their fields.

The farmers used wheel ploughs to till the fields.

The swing ploughs are used to till the fields.

The ice ploughs cleared the frozen road.

The farmers used ridge ploughs to prepare the field for planting.