service line

American  

noun

1. Tennis. the rear boundary of a service court.

2. a line running parallel to the front wall in certain court games, as handball or squash, that marks a boundary of the service area.

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service line British  

noun

1. the line at the back of the court behind which the server must stand when serving

2. a line indicating the boundary of a permissible service, as on the backwall of a squash court

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Etymology

Origin of service line

First recorded in 1870–75

Example Sentences

Somewhere on that paperwork will be a number to call — ideally for a life insurance agent who sold the policy to your parents, but it may be a more generic customer service line.

From Salon • Mar. 24, 2026

When Brad Collett heard about Citi’s new Strata Elite credit card—with perks like airport lounge access and a dedicated service line for top-tier customers—he decided to splurge on his first premium card.

From The Wall Street Journal • Oct. 16, 2025

When people call 911 and express a need for housing, financial or food assistance, they’ll get redirected to staff in charge of 211, the state’s social service line.

From Seattle Times • Apr. 17, 2024

"Since wave speed varies with material type, the first arrival time of the wave on top of the surface differs for different service line materials," they wrote.

From Science Daily • Mar. 7, 2024

I work my way through the menus and get to the consumer merchandise customer service line.

From "Things Not Seen" by Andrew Clements