time-ball


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ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.time-ball - a ball that slides down a staff to show a fixed time; especially at an observatory
horologe, timepiece, timekeeper - a measuring instrument or device for keeping time
globe, orb, ball - an object with a spherical shape; "a ball of fire"
References in periodicals archive ?
The Western Union Telegraph Company's time-ball fell sharply at the new 12 o'clock, and so gave to mariners and ship-masters an opportunity to set their time pieces on seventy fifth meridian time.
Other places besides Times Square use time-balls throughout the year, like the U.
Time-balls on prominent buildings, dropped at noon in accordance with observatory signals, were often advocated as of special value to mariners in port-cities.

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