noun
Gapsin Coup; Kapsin Coup
Historical term for the failed 1884 reformist coup d'état in Korea.
甲申政変は1884年に朝鮮で起きたクーデターである。
The Gapsin Coup was a coup d'état that occurred in Korea in 1884.
The term is composed of 甲申 (the sexagenary cycle year corresponding to 1884) and 政変 (political upheaval/coup). The derivation is straightforward from the historical event name.