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flack (n.)
"publicity or press agent," 1945, also by that year as a verb, said to have been coined at show biz magazine Variety (but the first attested use is not in Variety) and supposedly from name of Gene Flack, a movie agent, but influenced by flak. There was a Gene Flack who was an advertising executive in the U.S. during the 1940s, but he seems to have sold principally biscuits, not movies.
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Definitions of flack from WordNet
Dictionary entries near flack
flab
flabbergast
flabbergasted
flabby
flaccid
flack
flag
flagellant
flagellate
flagellation
flagellum