/ Dictionary / Index V volcanic neck: Meaning and Definition of Find definitions for: volcan'ic neck' Pronunciation: [key] — Geol. Geol. neck (def. 14). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. volcaniclastic volcanic tuff Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language