also hour-glass, instrument for measuring time, 1510s, from hour + glass (n.). Used 19c. in a variety of technical and scientific senses to describe the shape; in reference to women's torsos by 1 [..]

In computing, especially by means of the Windows operating system, an icon that replaces the pointer when the computer is performing a function and cannot receive new input.

(n) a sandglass that runs for sixty minutes

An hourglass, also known as a sandglass, sand timer or sand clock, is a device for the measurement of time. It consists of two glass bulbs placed one above the other which are connected by a narrow tu [..]

a fouled spinnaker whose middle is twisted so that only the top and bottom of the sail fill, but the wind spills without significant force being applied to the sail

A clock made of two glass vessels connected with a narrow passage, with sand flowing through that passage. ''After each game turn, invert the hourglass to reset the time limit for the next player. [..]