Borer may refer to: Insects Stem borer Twig borer Shoot borer Moths Chilo (moth) Diatraea grandiosella, southwestern corn borer Podosesia syringae, ash borer or lilac borer Melittia cucurbitae, squash vine borer, a pest of cucurbit vines Ostrinia, pests of maize and other plants Beetles Cosmopolites sordidus (banana stemborer), a true weevil in genus Cosmopolites Ptinidae, a family of beetles, especially: Anobium punctatum, common furniture borer Woodboring beetles Devices Cork borer, a tool of the chemistry laboratory Raise borer, a mining machine Instep borer, an instrument of torture Tunnel boring machine Reamer, a rotary cutting tool used in metalworking Drill Other Hotheaded Naked Ice Borer, a fictional mammal Borer Lake, United States בורר ("borer"), Sorting/Purification, one of the activities prohibited in Jewish law on Shabbat Animal common name disambiguation pages