landline
n. countablen. a phone that is connected to a house or office by a physical wire. You use this instead of a mobile phone or a satellite connection.
n. a conventional telecommunications connection that uses a physical wire or optical fiber for transmission. Often contrasted with mobile or satellite telephony.
I still use a landline because the mobile signal is weak here.
The office maintains a landline to ensure that emergency calls can be made even during a power outage.
While younger generations have largely abandoned the landline in favor of mobile devices, many businesses retain fixed-line connections for their perceived reliability and superior audio quality.
From land + line.
Often used as a modifier in noun phrases like 'landline phone' or 'landline number'.