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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 hour·glass /ˈaʊ(ə)rˌglæs/
 時漏,砂漏,水漏沙漏標

From: Webster's Revised Unabridged Dictionary (1913)

 Hour·glass n. An instrument for measuring time, especially the interval of an hour. It consists of a glass vessel having two compartments, from the uppermost of which a quantity of sand, water, or mercury occupies an hour in running through a small aperture unto the lower.
 Note:A similar instrument measuring any other interval of time takes its name from the interval measured; as, a half-hour glass, a half-minute glass. A three-minute glass is sometimes called an egg-glass, from being used to time the boiling of eggs.
 

From: WordNet (r) 2.0

 hourglass
      n : a sandglass that runs for sixty minutes