liner

(noun) (baseball) a hit that flies straight out from the batter. Synonyms: line drive. Example: "The batter hit a liner to the shortstop."

(noun) a protective covering that protects an inside surface. Synonyms: lining.

(noun) a piece of cloth that is used as the inside surface of a garment. Synonyms: lining.

(noun) a large commercial ship (especially one that carries passengers on a regular schedule). Synonyms: ocean liner.