hole saw

Noun

 * 1) A saw in the form of a hollow cylinder with teeth on the end or edge, used to produce holes on the workpiece and operated by rotation, often as an accessory to a power drill.

Translations

 * Catalan: serra corona
 * Chinese:
 * Cantonese: 令梳
 * Mandarin: 孔鋸
 * Finnish: reikäsaha
 * German:
 * Japanese: ホールソー
 * Korean: 구멍 톱
 * Russian: кольцева́я пила́