Gibb has not played for Pools since November (Getty Images)

The 31-year-old, who can also play at right-back, has only played seven games for Pools this season.

County boss Ian McParland said: "He'll bring energy and can also put good quality balls into the box."

Gibb, the Magpies' fourth signing of the transfer window, could make his debut alongside fellow new boy Gavin Strachan against Bradford on Saturday.