/ Dictionary / Index E Empirin: Meaning and Definition of Find definitions for: Em•pi•rin Pronunciation: (em'pu-rin, -prin), [key] — Trademark. Trademark. a brand of aspirin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: empirin (Thesaurus) empiricism empirism Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language