noun
(historical, military) Any horse used in horse-cavalry, but especially one bearing an armoured knight.
(figurative, informal) An experienced person who has been through many battles, situations or contests; someone who has given long service.
(theater, music) A regularly revived theatrical or musical work, as with Hamlet or a Beethoven symphony, or as excerpts thereto. May imply that the work in question has become hackneyed.
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