from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. One that is predominant, as in influence or power: "Especially when a candidate is a challenger, appearances with heavy hitters from the party lend an air of credibility” ( Linda Feldmann).

from the GNU version of the Collaborative International Dictionary of English

  • n. A person who is very important or is very effective at his profession.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an influential person who works hard to promote the causes they are interested in


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