Countersink Meaning

There are 3 meaning(s) for word Countersink

Meaning 1 : insert (a nail or screw below the surface, as into a countersink)

    Synonyms : set
Meaning 2 : a bit for enlarging the upper part of a hole

    Synonyms : counterbore,  countersink bit
Meaning 3 : 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