From naqab; properly, a perforator, i.e. A hammer (as piercing); also (intransitively) a perforation, i.e. A quarry -- hammer, hole.
see HEBREW naqab
H4718. maqqebeth
II. מַקֶּ֑בֶת noun feminine hole, excavation; — only construct ׳מ בּוֺר Isaiah 51:1 (figurative),excavation of a pit, = quarry ("" צוּר).