/ Dictionary / Index B branchial pouch: Meaning and Definition of Find definitions for: bran'chial pouch' Pronunciation: [key] — Embryol. Embryol. one of a series of rudimentary outcroppings of the inner pharyngeal wall, corresponding to the branchial grooves on the surface. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. branchial groove branchiate Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language