고인물
go-in-mul
Meaning
A veteran or expert who has stayed in a specific field or game for a very long time and mastered it.
한 분야나 게임 등에 아주 오랫동안 머물러 엄청난 실력이나 지식을 갖춘 베테랑 또는 숙련자.
Example
그 게임 서버에 들어갔더니 온통 고인물들뿐이라 초보인 나는 바로 졌어.
When I joined that game server, it was full of hardcore veterans, so being a beginner, I lost immediately.