"Line" was replaced with "loop" quite recently.
A family of computers that share a connection over their companies local telephone network and allow for the transmission of digital data. A step up from ole dial up, however...
Largely considered (and is, actually) inferior to cable, T1, fiber optic, etc, however, people still use it.
Hey, somebody's got to preserve whatever dignity this acronym has left.
DSL=Digital Subscribing Line. Don't forget it.