boring machine; punching machine; perforator
A machine for drilling or punching holes, typically in industrial contexts.
In this factory, they use a boring machine to make holes in metal sheets.
Standard kanji spelling for a boring/punching machine.
Variant kanji form; 鑽 is more common.
Compound of 鑽 (san, 'to bore, drill') + 孔 (kō, 'hole') + 機 (ki, 'machine'). The exact historical derivation is uncertain, but the kanji directly reflect the meaning.