countersink   (TTS Sound)

The countersink has 3 Senses.

• countersink
• a hole (usually in wood) with the top part enlarged so that a screw or bolt will fit into it and lie below the surface
• ねじかボルトはそれに収まって、表面の下にあるように拡大された最高部分がある穴（通常木の）

• countersink, countersink bit, counterbore
• a bit for enlarging the upper part of a hole
• 穴の上部を広げるための錐

• set, countersink
• insert (a nail or screw below the surface, as into a countersink)
• （釘またはねじを表面より下に、皿穴にはめるように）差し込む