from The Century Dictionary and Cyclopedia
- Having the shape of a wedge, with the cutting edge at the base: said of an arrow-head.
Sorry, no etymologies found.
Indeed, so strong is this instinct, that the health of the animals is greatly improved by putting pieces of wood into their cages, merely for the purpose of allowing them to exercise their chisel-edged teeth.
It is worthy of remark that other animals, which, though not rodents, need to possess chisel-edged incisor teeth, have a similar habit.
All the beaver's cutting is done by chisel-edged front teeth.
What is to be said of the behaviour of beavers who gnaw the base of a tree with their chisel-edged teeth till only a narrow core is left -- to snap in the first gale, bringing the useful branches down to the ground?