What does the word defect mean?

Usage examples for defect

  1. And what measure is there of the relations of pleasure to pain other than excess and defect, which means that they become greater and smaller, and more and fewer, and differ in degree? – The Best of the World's Classics, Restricted to prose. Volume I (of X) - Greece by Various
  2. Another defect of Milner as a historian is, that he is rather too anxious 'to improve the occasion. – The English Church in the Eighteenth Century by Charles J. Abbey and John H. Overton