복역이 · 복역을 (복역하다)
serving a prison sentence
Example
그는 5년 동안 복역한 뒤 출소했어요.
He was released after serving five years in prison.
Word parts
복 serve+역 labor
Literally 'serving a term of labor'.
Good to know
Pronounced [보격]: the batchim ㄱ links to the next vowel.