- A horse used in combat; a charger.
- Informal A person who has been through many battles, struggles, or difficult experiences.
- Informal A musical or dramatic work that has been performed so often that it has become widely familiar.
- (historical) Any horse used in horse-cavalry, but especially one bearing an armored knight.
- As he spoke, the knight-errant, who had remounted his warhorse, galloped forward to the royal stand, with a silken kerchief bound round his wounded arm. — Arthur Conan Doyle, The White Company, Chapter 26.
- (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.
- 2006 Most important though is the fact that, for the first time in I can barely remember how long, the ROH mounts a new production of an Italian repertory warhorse that is fully on the level of the one it replaces [and indeed, in some respects, surpasses it] [...] we actually have a "Tosca". — Google group.
- An experienced person who has been through many battles, situations or contests; someone who has given long service.
- "Srinath: India's warhorse" (headline from BBC News)
Variant of war horse
- a horse used in battle; charger
- Informal a person who has been through many battles or struggles; veteran
- Informal a symphony, play, opera, etc. that has been performed so often as to seem trite and stale
For 2 & 3, now usually written warhorse