pyrrhic

(adjective): Of or relating to Pyrrhus (319/318–272 BC), Greek general and statesman.
(adjective): Achieved at too great a cost or detriment to have been worthwhile (as a victory, accomplishment, etc).
(noun): An Ancient Greek war dance.
(noun): A metric foot with two short or unaccented syllables.
(adjective): Of or characterized by pyrrhics (metrical feet with two short syllables).
(adjective): Relating to Pyrrhus, a Macedonian king, or some of his costly victories he had while fighting Rome.