What does the word expound mean?

Usage examples for expound

  1. So I shrugged my shoulders sadly and consoled myself by reflecting that very likely the issue would go against me, and that my own existence would pay the price of the venture and expound its moral. – Child of Storm by H. Rider Haggard
  2. For Jacob came over to expound his minute symptoms; and had everything that he gave out on the subject of human ailments been written down, it must have made a volume as large, as solemn, and as inconvenient as a family Bible. – A Kentucky Cardinal by James Lane Allen