/ Dictionary / Index V vagal block: Meaning and Definition of Find definitions for: va'gal block' Pronunciation: [key] — Med. Med. the obstruction of vagus nerve impulses by the administration of drugs, a treatment for reducing acid secretion by the stomach. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. vagal vagarious Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language