Decker /(dĕk"ẽr)/

Deck·er

Decker

n.
  1. One who, or that which, decks or adorns; a coverer; as, a table decker.
  2. A vessel or vehicle which has a deck or decks; -- used esp. in composition; as, a single-decker; a three-decker; a double-decker bus.