tie-line

noun

: a telephone line that directly connects two or more private branch exchanges

Word History

First Known Use

1923, in the meaning defined above

Time Traveler
The first known use of tie-line was in 1923

Dictionary Entries Near tie-line

Cite this Entry

“Tie-line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tie-line. Accessed 23 Nov. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!