What does "dexter" mean?

Dexter: (Her.) On the right-hand side of a shield, i. e., towards the right hand of its wearer. To a spectator in front, as in a pictorial representation, this would be the left side. Dexter chief, or Dexter point (Her.), a point in the dexter upper corner of the shield, being in the dexter extremity of the chief, as A in the cut. -- Dexter base, a point in the dexter lower part or base of the shield, as B in the cut.