증인도

a witness too

→ 증인
phrase Rare #31,859
a witness too 증인 means “witness,” and 도 adds “too” or “also.” The noun can be singular or plural depending on context.
KO: 증인도 왔어요.
EN: A witness came too.

증인도 들어서 알고 있습니다

The witness has heard about it too and knows.

— 어 퓨 굿 맨 (1992)

증인도 많았다.

There were plenty of witnesses, too.