Definitions of pyrrhic:

• noun:   an ancient Greek dance imitating the motions of warfare
• noun:   a metrical unit with unstressed-unstressed syllables
• adjective:   of or relating to or resembling Pyrrhus or his exploits (especially his sustaining staggering losses in order to defeat the Romans)

  Example: "A Pyrrhic victory"

• adjective:   of or relating to or containing a metrical foot of two unstressed syllables

  Example: "Pyrrhic verses"

• adjective:   of or relating to a war dance of ancient Greece

  Example: "Pyrrhic dance movements"