borer

/ˈbɔrər/

Other forms: borers

Definitions of borer

1. noun

   a drill for penetrating rock
   synonyms: bore bit, rock drill, stone drill

   types:

   cross bit

   a rock drill having cruciform cutting edges; used in mining

   star drill

   a steel rock drill with a star-shaped point that is used for making holes in stones or masonry; it is operated by hitting the end with a hammer while rotating it between blows

   straight flute, straight-fluted drill

   a rock drill with flutes that are straight

   type of:

   drill

   a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows)
2. noun

   any of various insects or larvae or mollusks that bore into wood
   synonyms: woodborer

   type of:

   invertebrate

   any animal lacking a backbone or notochord; the term is not used as a scientific classification