a telephone line for outgoing calls, esp. from a business
The terrific pressure was hurling the outside line of ships about like thistledown.
"It means that we'll ride the outside line in the morning," came the reply.
The attacking party seeks to force as many of the defenders beyond the outside line as possible.
The centre consists of a mass of French knots, and the outside line is in satin stitch.
It is usually more difficult to hit him in the outside line.