Liner

Liner or LINER may refer to:

In line drawing:

• Eye liner, a type of makeup
• Liner, a sable brush used by coach painters

In linings:

• Acoustic liner, a perforated metal sheet used to lower the noise of aircraft engines by the principle of Helmholtz resonance
• Bin liner, an item used as a protective layer fitted inside of a bin or another object
• Landfill liner, a membrane placed at the bottom of landfills
• Liner, an installation of well-drilling casing that does not extend to the surface
• Release liner is a paper or film used on labels and adhesive tapes to cover the adhesive until ready for use

In transportation:

• Airliner, a large fixed-wing aircraft for transporting passengers and cargo
• Ocean liner, a type of modern-day passenger ship
• Ship of the line, an archaic term, a type of warship used from the 17th century to the 19th century

Other:

• Liner (baseball), or line drive, a type of batted ball, sharply hit, and on a level trajectory
• Linerboard, or just liner is a type of paperboard, used in making corrugated fiberboard
• Low-ionization nuclear emission-line region (LINER), a class of galactic nuclei (also used to refer to galaxies with such nuclei)