Definition of "tile"
A regularly-shaped slab of clay or other material, affixed to cover or decorate a surface, as in a roof-tile, glazed tile, stove tile, etc.
A rectangular graphic.
Any of various types of cuboid playing piece used in certain games, such as in dominoes, Scrabble, mahjong, or Rummikub.
To cover with tiles.
To arrange in a regular pattern, with adjoining edges (applied to tile-like objects, graphics, windows in a computer interface).