killer n[There] are three, viz. The Ground-killer; which lies upon the ground, across the front of the Deathfall. The Cat-killer; one end of which turns upon a nail which is driven into a strong stake, and the other is supported high up by a line which passes over a crutch on the top of a stake and then comes down to another at the bottom, under which one end of the tongue is fixed, while the other supports the bridge; which being pressed by the animal, disengages the point of the tongue, that sets the cat-killer at liberty and it falls down upon the ground-killer; consequently falls down upon the back of any animal, which may be standing across the latter. And the Main-killer; one end of which rests upon the grou...