big enchilada
noun
°A very important person, especially the highest-ranking individual in an organization.
"The detectives were trying to identify the big enchilada who controlled the entire criminal network."
°Some item of high value, especially a top prize or reward.
"When the lottery results were announced, he was stunned to learn that the big enchilada was all his."
synonyms: big cheese, big kahuna, bigwig, big wheel more» , grand poobah, head honcho, kingpin, muckety muck, top banana, top dog, brass ring