Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A highly energetic or dynamic person.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun idiomatic A person who is especially hard-working, high-achieving, ambitious, or active.

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

  • noun someone whose career progresses rapidly
  • noun a highly energetic and indefatigable person

Etymologies

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Examples

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