What is a knife?

Answer 1

While many people today refer to a 'scalpel' as a doctors knife, historically Doctor Knife is a small pocket knife with rather slender, 3-4" long blade. Doctors usually carried the, especially in 18-19th centuries and beginning of 20th.

Several makers today still make them, e.g. Case.

Answer 2

A chasing blade is a blade utilized during chasing for setting up the game to be utilized as food: cleaning the creature and cutting up the meat. It is not quite the same as the Hunting knife which was customarily used to slaughter wild game.

Answer 3

A knife is a utensil or tool designed for cutting.

Answer 4

Generally a knife you carry to field dress your hunted quarry.