# sharpen his plow points

The words "plow points" refer to the point of a metal tool used for digging up the ground for planting crops.

# mattock ... ax ... sickle

These are common garden tools.

# mattock

A "mattock" is a broad-bladed axe, with a horizontal blade that is used for breaking up hard soil.

# sickle

a curved blade for cutting grasses and grain stalks