プログレッシブ和英中辞典(第4版)の解説
ときめく【時めく】
〔栄えている〕be prosperous, be thriving；〔勢力がある〕be influential
今を時めく小説家だ
He is one of the most popular novelists today.
世に時めく政治家だ
He is a most powerful [influential] politician now.
彼は今を時めく会社の社長だ
He is the president of a company which is enjoying great prosperity now.