noun
drill bit
A cutting tool used with a drill to bore holes. Common in DIY, construction, and machining contexts.
このドリルビットは金属にも使えます。
This drill bit can also be used on metal.
Variant with interpunct; less common in running text.
ドリル is the drill itself, while ドリルビット is the removable cutting bit.
Loanword from English 'drill bit'.