/ Dictionary / Index P paper birch: Meaning and Definition of Find definitions for: pa'per birch" Pronunciation: [key] a North American birch, Betula papyrifera, having a tough bark and yielding a valuable wood: the state tree of New Hampshire. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. paperbark maple paperboard Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language