Close-up illustration of scalpriform incisor of a beaver. It is "chisel-shaped; having the character of a chisel-tooth; truncate at the end and beveled there to a sharp edge; specifically said of the incisor teeth of rodents, and the similar teeth of a few other mammals." —Whitney, 1889

Scalpriform, Left Lower Incisor of a Beaver

Close-up illustration of scalpriform incisor of a beaver. It is "chisel-shaped; having the character…

"It is from one to four feet long, and weighs from one to twenty-five pounds. This species feed on frogs and fish, and are most active at night." — Goodrich, 1859

Sharp-Nosed Eel

"It is from one to four feet long, and weighs from one to twenty-five pounds. This species feed on frogs…

A piano keyboard.

Keyboard

A piano keyboard.

The lead can be sharpened to a chisel edge by rubbing it against a bit of sand paper or a fine file, and the corners slightly rounded.

Sharpened Pencil

The lead can be sharpened to a chisel edge by rubbing it against a bit of sand paper or a fine file,…

Scissors are hand operated cutting instruments. they consist of a pair of metal blades, or tangs, connected in such a way that the sharpened edges slide against each other.

A Pair of Scissors

Scissors are hand operated cutting instruments. they consist of a pair of metal blades, or tangs, connected…

Used for mowing and reaping, consisting of a long curved blade fixed at an angle to a long bent handle.

Attachment Scythe

Used for mowing and reaping, consisting of a long curved blade fixed at an angle to a long bent handle.

The sharp or sharpie is a long, narrow sailboat with a flat bottom used for oystering.

Sharpie

The sharp or sharpie is a long, narrow sailboat with a flat bottom used for oystering.

"A reaping hook; a curved blade of steel (anciently also of bronze) having the edge on the inner side of the curve, with a short handle or haft, for cutting with the right hand grain or grass which is grasped by the left." —Whitney, 1889
<p>This sickle has a serrated edge on the inside curve of the blade.

Sickle with Serrated Edge

"A reaping hook; a curved blade of steel (anciently also of bronze) having the edge on the inner side…