What does the word summon mean?

Usage examples for summon

  1. " she added, trying to summon her English, of which she had plenty of a sort, though not always at hand. – Warlock o' Glenwarlock by George MacDonald
  2. Julia saw that she must submit to the mortification of seeing her father at Mrs. Crane's dinner table, and with a beating heart she heard the bell summon them to the dining room. – Tempest and Sunshine by Mary J. Holmes
  3. You summon no energy and purpose. – A Tale of Two Cities A Story of the French Revolution by Charles Dickens