What does the word wart mean?

Usage examples for wart

  1. Joe is a widower with two boys, a gentle voice, a gentle, wondering mind, and a remarkable wart in the very center of his left palm. – Green Valley by Katharine Reynolds
  2. He was exactly like that " Mr. Ratin" hit off in caricature so neatly by Topffer; he had all the marks, even to the wart with the three hairs, and fine wrinkles beyond number at the end of his old nose; to me his face was the personification of all that was hideous and disgusting. – The Story of a Child by Pierre Loti