An important person, often in the negative sense of self-important; a bigwig(noun)
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Use "macher" in a sentence
"Such is the reach of the billionaire named by this list two years running as the most powerful person in the art world -- a man who more than any other deserves the term macher, which started appearing out of the blue in countless entries about Mr. Pinault from our New York writers."
"In Jerusalem's ultra-Orthodox community this week, Rosenbaum, who claimed to be a real estate dealer, was described as a macher, or fixer, who assisted renal patients in finding appropriate medical treatment in the U.S."
"Well, if this were the "macher" awards, Gupta would win hands down."