noun

• (uncountable) Rock that is ground more finely than gravel, but is not as fine as silt (more formally, see grain sizes chart), forming beaches and deserts and also used in construction.
  "For a spell we done pretty well. Then there came a reg'lar terror of a sou'wester same as you don't get one summer in a thousand, and blowed the shanty flat and ripped about half of the weir poles out of the sand."
• (uncountable) Rock that is ground more finely than gravel, but is not as fine as silt (more formally, see grain sizes chart), forming beaches and deserts and also used in construction.
  "One sand was that used in cement testing with white well rounded smooth grains, passing through a 20-mesh sieve and retained on a 30-mesh sieve. The other was ordinary brown building sand, passing 40-mesh and retained on 60-mesh."
• (uncountable) Rock that is ground more finely than gravel, but is not as fine as silt (more formally, see grain sizes chart), forming beaches and deserts and also used in construction.
  "The Canadian tar sands are a promising source of oil."
• (uncountable, dated) Personal courage.
  "You may say what you want to, but in my opinion she had more sand in her than any girl I ever see; in my opinion she was just full of sand."

verb

• (transitive) To abrade the surface of (something) with sand or sandpaper in order to smooth or clean it.
• (transitive) To cover with sand.
  "Sudden stopping, which could be effected easily by sanding the rails and reversing the driving-gear, was dangerous, because the train might telescope and overwhelm the engine."
• (transitive, historical) To blot ink using sand.
  "The officer wrote until he had finished, read over to himself what he had written, sanded it, and handed it to Defarge, with the words "In secret.""

noun

• (colloquial, birdwatching) Ellipsis of sandpiper.