hourglass

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hourglass,

glass instrument for measuring time, usually consisting of two bulbs united by a narrow neck. One bulb is filled with fine sand that runs through the neck into the other bulb in an hour's time. The date of its invention is unknown, but it was in use in ancient times. Similar devices for marking shorter periods of time, e.g., three-minute sandglasses for timing the cooking of eggs, are still used occasionally.

What does it mean when you dream about an hourglass?

An hourglass represents the passing of time and the end of a cycle in one’s life or a project.

hourglass

[′au̇r‚glas]
(horology)
An instrument for measuring time, consisting of two somewhat funnel-shaped vessels joined at their narrow points by a thin, hollow neck; one hour is required for a given quantity of sand to fall from the upper to the lower vessel.

hourglass

An icon that is commonly used on graphical interfaces to mean "wait until finished." When the hourglass icon appears, you cannot do anything within that part of the application until that task has completed and the hourglass goes away.

An hourglass is a centuries-old device for counting time. It consists of two glass chambers attached to each other via a tiny opening. Half filled with sand, when the hourglass is turned over, the sand falls from one chamber to the other. The amount of sand and size of chambers and opening are precisely measured so that when all the sand from one side falls to the other, a certain amount of time has passed. See hourglassing.
References in periodicals archive ?
One of my favorite hourglasses lies along the bank of a small river in central Kansas.
This was manifested most clearly in personal times, 2003, four huge hourglasses hung side by side as if communicating.
Using simple blocks with shapes like cubes or hourglasses, researchers have found ways to construct strong panels with no fasteners securing most of the blocks.