n. Water-worn detritus, finer than that to which the name gravel would ordinarily be applied: but the line between sand and gravel cannot be distinctly drawn, and they frequently occur intermingled.n. A tract or region composed principally of sand, like the deserts of Arabia; or a tract of sand exposed by the ebb of the tide: as, the Libyan Sands; the Solway sands.n. Any mass of small hard particles: as, the sand of an hour-glass; sand used in blotting.n. In founding, a mixture of sand, clay, and other materials used in making molds for casting metals.n. Sandstone: so used in the Pennsylvania petroleum region, where the various beds of petroliferous sandstone are called oil-sands, and designated as first, second, third, etc., in the order in which they are struck in the borings. Similarly, the gas-bearing sandstones are called gas-sands.n. plural The moments, minutes, or small portions of time; lifetime; allotted period of life: in allusion to the sand in the hour-glass used for measuring time.n. Force of character; stamina; grit; endurance; pluck.To sprinkle with sand; specifically, to powder with sand, as a freshly painted surface in order to make it resemble stone, or fresh writing to keep it from blotting.To add sand to: as, to sand sugar.To drive upon a sand-bank.n. A message; a mission; an embassy.