Breadcrumb Home > Dictionary > Index O Cite oak fern: Meaning and Definition of Find definitions for: oak' fern" Pronunciation: [key] a small woodland fern, Gymnocarpium dryopteris, of northern regions, having triangular, pinnate fronds that slant horizontally. Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease. oaken Oak Forest TrendingHere are the facts and trivia that people are buzzing about. February 2021 Current Events: US News The Berlin Conference and the Partition of Africa The Implied Powers of Congress The Women's March on Versailles Keeping Your Brain Active in a COVID-19 World The Manchu Related Content Daily Word Quiz: internecine Analogy of the Day: Today?s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language