What does the word gathering mean?

Usage examples for gathering

  1. He sat for a few moments absolutely still, gathering strength to command himself. – The Doctor A Tale Of The Rockies by Ralph Connor
  2. I can feel, nay I can see the clouds gathering over our two lands. – The Hunters of the Hills by Joseph Altsheler
  3. It was this gathering of the guerrillas that Harry was now watching. – The Courier of the Ozarks by Byron A. Dunn