a device for making holes The difference between a borer (used for making tunnels, circular shafts and the like) and a drill is the size of the hole produced Borers take the large range of plus 3-4 feet Because of the size involved, a borer is usually much more complex than a drill
A marine, bivalve mollusk, of the genus Teredo and allies, which burrows in wood
One of the larvæ of many species of insects, which penetrate trees, as the apple, peach, pine, etc