Look up greenhorn in Wiktionary, the free dictionary.

Greenhorn is a slang for an inexperienced person, and/or a slur against Portuguese people chiefly in New England, United States.^[1][2] It may also refer to:

• Greenhorn, California, United States
• Greenhorn Mountain, a mountain in Colorado, United States
• The Greenhorn Valley in Colorado, United States
• Greenhorn, Oregon, United States

• The Greenhornes, a rock band from Cincinnati, Ohio
• Greenhorn Limestone, a widespread geologic unit in the plains and mountainous Western United States

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