bigwig

noun

1. (informal)A person of importance in a group or organization.

   “The company bigwig is gathering his staff together for a meeting today.”

   “[…] more innocently, and no doubt profitably, than if he had dined at a big-wig's board or bemused himself with smoke and beer among his brethren of the pen.”

   “Before her hay-day, she attended many derbys under her dad's celebrity where she'd hobnob with the bigwigs in Millionaire's Row.”