This is the 6034th most frequent Japanese word.
イケメン
A handsome or attractive man.
In this sentence, "イケメン" is used to describe someone's physical appearance and attractiveness.
彼はイケメンだから、みんなに人気があります。
Because he is handsome, he is popular with everyone.
Here, "イケメン" is used as an adjective-like term to describe the actor as attractive and appealing.
イケメンの俳優が新しい映画に出演します。
A handsome actor will appear in the new movie.
In this context, "イケメン" extends beyond physical attractiveness to describe admirable, gentlemanly behavior.