/ Dictionary / Index N nerve trunk: Meaning and Definition of Find definitions for: nerve' trunk" Pronunciation: [key] — Anat. Anat. the main stem of a nerve. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nerve root nervine Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language