This is the 6807th most frequent Korean word.
이희동
"이희동" is a Korean name and does not have a specific definition.
In this sentence, '이희동' is used as a proper noun referring to a person's full name, and the '씨' honorific is attached.
이희동씨는 서울에서 삽니다.
Mr. Lee Hee-Dong lives in Seoul.
Here, '이희동' is a proper noun functioning as the possessor in a possessive construction where '-의' denotes possession.
이희동의 책은 매우 잘 쓰여졌습니다.
Lee Hee-Dong's book is very well written.
In this example, '이희동' identifies a name itself as an abstract noun referred to in context.