liner

noun

• Someone who fits a lining to something.

  "1973, A good liner has a pretty shrewd idea of the value of the painting he is treating and usually charges accordingly. — Kyril Bonfiglioli, Don't Point That Thing at Me (Penguin 2001, p. 41)"

• A removable cover or lining

  "I threw out the trash can liner."

• The pamphlet which is contained inside an album of music or movie

  "Does it have the lyrics in the liner notes?"

• A lining within the cylinder of a steam engine, in which the piston works and between which and the outer shell of the cylinder a space is left to form a steam jacket.
• A slab on which small pieces of marble, tile, etc., are fastened for grinding.
• Formal no show sock