What does the word across mean?

Usage examples for across

  1. Few letters were written or received by people in England, still more seldom letters sent across the sea. – By Pike and Dyke: A Tale of the Rise of the Dutch Republic by G.A. Henty
  2. She pointed across the water in the direction of the hotel. – Madge Morton, Captain of the Merry Maid by Amy D. V. Chalmers
  3. Only from across the river. – Miss Billy by Eleanor H. Porter