• Verb (used with object)

    to enlarge the upper part of (a cavity), esp. by chamfering, to receive the cone-shaped head of a screw, bolt, etc.
    to cause (the head of a screw, bolt, etc.) to sink into a prepared depression so as to be flush with or below the surface.

    Noun

    a tool for countersinking a hole.
    a countersunk hole.
    Lấy từ « http://tratu.soha.vn/dict/en_en/Countersink »

    tác giả


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