Also found in: Thesaurus, Wikipedia.
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"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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.S.
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.

Full browser ?