(baseball) a hit that flies straight out from the batter
"the batter hit a liner to the shortstop"
a large commercial ship (especially one that carries passengers on a regular schedule)
"The ocean liner departed from New York Harbor early in the morning to begin its weekly crossing to Europe."
Someone who fits a lining to something.
"Astronomers study the high-energy emissions from a hot liner in the center of the Milky Way galaxy to understand its structure and behavior."
A large passenger-carrying ship, especially one on a regular route; an ocean liner.
low ionization nuclear emission line region
In plain English: A liner is something that lines the inside of an object to protect it or make it look better, like paper lining a shoe box.
"The cruise liner docked at the port after its long journey across the ocean."
Usage: Use this word primarily to describe a large passenger vessel that operates on scheduled routes between specific ports. It is distinct from smaller boats or freight ships because its main purpose is transporting people rather than cargo.
A surname.
"Mr. Liner was known throughout the community as a generous neighbor."
Liner comes from combining the verb line with the agent suffix -er. It originally referred to a person or thing that lines something, such as a ship's hull or a garment lining.