Definition of "sand" []

• Small loose grains of worn or disintegrated rock. (noun)
• Geology A sedimentary material, finer than a granule and coarser than silt, with grains between 0.06 and 2.0 millimeters in diameter. (noun)
• A tract of land covered with sand, as a beach or desert. Often used in the plural. (noun)
• The loose, granular, gritty particles in an hourglass. (noun)
• Moments of allotted time or duration: "The sands are numb'red that makes up my life” ( Shakespeare). (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "This enables great whites to detect a heart beat of prey buried in sand from a faint electrical field or the action of a gill or a swimming muscle of another animal."
• "The most common releasing agent is sand, and hence the term sand moulding."
• "They bring in sand from the shore in every fold of their clothes, and it shakes out of them on to the carpets and the sofa cushions, and everything in the house."