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

  • n. An inexperienced or immature person, especially one who is easily deceived.
  • n. A newcomer, especially one who is unfamiliar with the ways of a place or group.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. an inexperienced person; a novice, beginner or newcomer

from the GNU version of the Collaborative International Dictionary of English

  • n. A raw, inexperienced person; one easily imposed upon.

from The Century Dictionary and Cyclopedia

  • n. A raw, inexperienced person; one unacquainted with the world or with local customs, and therefore easily imposed upon.

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

  • n. an awkward and inexperienced youth


Middle English greene horn, horn of a newly slaughtered animal : grene, green; see green + horn, horn; see horn.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Unconfirmed. Hypotheses include: (Wiktionary)



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  • None of that greenhorn lot matched her bright crown
    from "The Queen's Complaint," Sylvia Plath

    April 14, 2008