sand

v. scatter sand; cover with sand; rub or polish with sand; smooth with sandpaper

n. fine grains of rock; beach, area covered primarily with sand

Sand is a granular material made up of fine mineral particles. It is a naturally occurring, finely divided rock. Sand comprises particles, or granules, ranging in diameter from 0.0625 (or mm) to 2 millimeters. An individual particle in this range size is termed a sand grain. The next smaller size class in geology is silt: particles smaller than 0.0625 mm down to 0.004 mm in diameter. The next larger size class above sand is gravel, with particles ranging from 2 mm up to 64 mm (see particle size for standards in use). Sand feels gritty when rubbed between the fingers (silt, by comparison, feels like flour). Sand is commonly divided into five sub-categories based on size: very fine sand (1/16 - 1/8 mm diameter), fine sand (1/8 mm - 1/4 mm), medium sand (1/4 mm - 1/2 mm), coarse sand (1/2 mm - 1 mm), and very coarse sand (1 mm - 2 mm). These sizes are based on the Φ sediment size scale, where size in Φ = -log base 2 of size in mm. On this scale, for sand the value of Φ varies from -1 to +4, with the divisions between sub-categories at whole numbers.
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n. sand, fine grains of rock

(v. t.)
To sprinkle or cover with sand.
  

(v. t.)
To mix with sand for purposes of fraud; as, to sand sugar.
  

(v. t.)
To drive upon the sand.
  

(v. t.)
To bury (oysters) beneath drifting sand or mud.
  

(n.)
Tracts of land consisting of sand, like the deserts of Arabia and Africa; also, extensive tracts of sand exposed by the ebb of the tide.
  

(n.)
The sand in the hourglass; hence, a moment or interval of time; the term or extent of one's life.
  

(n.)
Fine particles of stone, esp. of siliceous stone, but not reduced to dust; comminuted stone in the form of loose grains, which are not coherent when wet.
  

(n.)
Courage; pluck; grit.
  

(n.)
A single particle of such stone.
  

1. A particle of rock or mineral material, coarser than silt, that has been transported from its place of origin, as by water or wind. A particle of sand is usually between 1/16 and two millimeters in diameter. Sands are frequently composed of quartz. 2. A loosely connected body of such particles.