Thesaurus: time-ball
a ball that slides down a staff to show a fixed time; especially at an observatory
Related headwords
balldefinitionfixeddefinitionobservatorydefinitionshowdefinitionslidesdefinitionstaffdefinitiontimedefinitiontime-and-motion studyfamilytime-capsulesfamilytime-chartsfamilytime-checksfamilytime-consumingfamilytime-delay measuring instrumentfamilytime-delay measuring systemfamilytime-framesfamilytime-fusefamilytime-honoredfamilytime-honouredfamilytime-horizonsfamilytime-intervalsfamilytime-keepersfamilytime-limitsfamilytime-motion studyfamilytime-outfamilytime-outsfamilytime-periodsfamilytime-piecesfamilytime-pointsfamily