/ Dictionary / Index T tpk.: Meaning and Definition of Find definitions for: tpk. Pronunciation: [key] turnpike. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tpi tpm Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language