Breadcrumb Home > Dictionary > Index T tie line: Meaning and Definition of Find definitions for: tie' line" Pronunciation: [key] — Telecommunications. Telecommunications. a line that connects two or more extensions in a PBX telephone system. a private telephone channel, leased from a telephone company, that connects two or more PBX systems. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tie-in tiemannite TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: quisling Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language