Pyrrhic (adj.)youdaoicibaDictYouDict[Pyrrhic 词源字典]
1885 (usually in phrase Pyrrhic victory), from Pyrrhus, king of Epirus, who defeated Roman armies at Asculum, 280 B.C.E., but at such cost to his own troops that he was unable to follow up and attack Rome itself, and is said to have remarked, "one more such victory and we are lost."[Pyrrhic etymology, Pyrrhic origin, 英语词源]
pyrrhic (n.)youdaoicibaDictYouDict
"dance in armor" (1590s), also a type of metrical foot (1620s), from Latin pyrrhicha, from Greek pyrrikhe orkhesis, the war-dance of ancient Greece, traditionally named for its inventor, Pyrrikhos. The name means "reddish," from pyrros "flame-colored," from pyr "fire," from PIE root *paəwr- "fire" (see fire (n.)). As an adjective from 1749.