hourglass

hourglass is defined in Webster's Unabridged Dictionary (1913) with 1 sense, and appears in Roget's Thesaurus (1911) with 40 related terms. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.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.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

Synonyms

Related questions

Sources

  • Definitions: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
  • Synonyms: Roget's Thesaurus, 1911 edition (public domain, via Project Gutenberg eBook #10681).
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