What does the word Otto mean?

Usage examples for Otto

  1. Beside him, Otto Harkaman was laughing. – Space Viking by Henry Beam Piper
  2. When my husband died, my heart broke- and it was Otto von Holzen who killed him." – Roden's Corner by Henry Seton Merriman
  3. It is to Count Otto? – East Lynne by Mrs. Henry Wood