<p><strong>Noun</strong></p><ul><li>a person or thing that bores or pierces.</li><li>Machinery: a tool used for boring; auger.</li><li>Zoology: any of several insects that bore into trees, fruits, etc., especially a beetle that bores into the woody part of plants.</li><li>any of various mollusks, worms, etc., that bore into wood, stone, coral, or shells.</li><li>a marsipobranch fish, as a hagfish, that bores into other fishes to feed on their flesh.</li></ul>