borer
nounUK /ˈbɔːrə/
US /ˈbɔːrər/
A borer is a small animal or tool that makes holes in wood or plants.
The borer drilled a tiny hole into the tree trunk.
OTHER MEANINGS
2. An insect or its larva that bores into wood, fruit, or stems.
The apple borer ruined the fruit on the tree.
3. A tool or machine used for boring holes.
He used a borer to make a hole in the fence post.
4. A person who makes holes by boring.
The borer worked carefully on the metal pipe.