- a person or thing that bores or pierces.
- a tool used for boring; auger.
- Zoology.
- any of several insects that bore into trees, fruits, etc., especially a beetle that bores into the woody part of plants.
- any of various mollusks, worms, etc., that bore into wood, stone, coral, or shells.
- a marsipobranch fish, as a hagfish, that bores into other fishes to feed on their flesh.
- a machine or hand tool for boring holes
- any of various insects, insect larvae, molluscs, or crustaceans that bore into rock or plant material, esp wood
