tie-line

noun
\ ˈtī-ˌlīn How to pronounce tie-line (audio) \

Definition of tie-line

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

First Known Use of tie-line

1923, in the meaning defined above

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Time Traveler for tie-line

Time Traveler

The first known use of tie-line was in 1923

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Cite this Entry

“Tie-line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tie-line. Accessed 10 Aug. 2020.

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