Borer (noun)

1. A machine or tool for boring holes.
2. An insect or a worm that bores into wood or other plant material.

Origin:

From bore (to make a hole by drilling or cutting) + -er.

Examples:

1. He used a hand-held borer to make a hole in the wall.
2. The machine is a borer that is used to make holes in wood.
3. The carpenter used a borer to make a hole for the door knob.
4. The borer insect damaged the apple tree, causing it to die.
5. The borer worms tunneled through the wood, weakening the structure.