liner
UK: ˈlaɪnə | US: ˈlaɪnər
n. a large commercial ship or aircraft that carries passengers on a regular route
n. a cosmetic product (e.g., eyeliner) used to outline or define features
n. a protective material or coating placed inside another object (e.g., trash bag liner)
The word "liner" derives from the root "line," originating from the Latin linea (a string, thread, or mark), which evolved into Old English līne (rope, series). The suffix "-er" (from Old English -ere) denotes something or someone associated with an action or function. Originally, "liner" referred to ships following fixed routes (marked by lines on maps), later expanding to aircraft and other objects with linear or protective functions.
The luxury liner sailed across the Atlantic in six days.
She applied black eyeliner to accentuate her eyes.
The trash can liner prevents leaks and odors.
The airline added a new liner to its fleet for international flights.
The drawer liner keeps utensils from sliding around.