English Dictionary

countersink

名詞

a cylindrical recess, typically machined around a hole to admit a screw so that it sits flush with a surface.

日本語の意味

ネジ頭が表面と同じ高さになるよう、穴の周囲を円筒状に加工して設けられるくぼみ

Before assembling the shelf, drill a countersink so the screws will sit flush with the surface.

棚を組み立てる前に、ねじが表面と同じ高さに収まるよう、穴の周りに円筒形のくぼみを加工してください。

意味（1）

a cylindrical recess, typically machined around a hole to admit a screw so that it sits flush with a surface.

countersinks （ plural ）