깃발이

flag

→ 깃발
phrase Rare #26,393
flag 이 is a subject particle attached to 깃발, marking the flag as the subject of the sentence.
KO: 깃발이 바람에 펄럭여요.
EN: The flag is waving in the wind.

“제니퍼, 깃발이 보이나?”

“Jennifer, can you see the flag?”

노란 깃발이 나왔군요

The yellow flag is out.

— 학살기관 (2017)

스펜서포트 깃발이 맞지?

The Spenport flag, right?