landline

[land-lahyn]
noun
1.
a circuit of wire or cable connecting two ground locations.
2.
Citizens Band Radio Slang. a telephone.

Origin:
1860–65; land + line1

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Etymonline
Word Origin & History

landline
by 1861, originally a telegraph wire run over land (as opposed to under sea); from land (n.) + line (n.). In modern use (by 1965), a telephone line which uses wire or some other material (distinguished from a radio or cellular line).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Also avoid using landline phones, televisions, and other appliances that
  conduct electricity.
If your cellphone service is unreliable, find a place where you can speak from
  a landline.
Make sure to use a landline, because you don't want a dropped call.
But there was no way to call a landline or cellphone.
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