/ Dictionary / Index P pack animal: Meaning and Definition of Find definitions for: pack' an"imal Pronunciation: [key] a mule, donkey, burro, or horse bred for vigor and hardiness and used for carrying heavy loads. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. packaging packboard Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language