tile

A tile is most commonly a thin, flat piece, often square or rectangular, used to cover floors, walls, roofs, showers, or other surfaces. Tiles can be made of ceramic, porcelain, glass, stone, metal, or similar materials, and they are often chosen for both protection and decoration. You might see them in a bathroom, in a kitchen backsplash, on a roof, or in a colorful mosaic. "She carefully laid each mosaic tile to complete the pattern." In games such as Mahjong and Scrabble, the flat playing pieces are also called tiles.

In digital use, a tile is one small section of a larger visual whole. A map on a phone, for example, is often built from many small image pieces that load as needed. In software and design, the word can also describe a rectangular block in a layout or interface. In this sense, the idea stays close to the original one: a larger surface or system made from smaller parts.

As a verb, tile means to cover a surface with these flat pieces. "They decided to tile the kitchen floor with terracotta." In technical and mathematical contexts, it can also mean arranging repeated shapes or sections so they fit together across an area, sometimes without gaps or overlaps.

The word comes through Middle English from Latin tegula, meaning a roof tile. Across its uses, the central idea remains steady: a small, flat unit that forms part of something larger, whether that is a floor, a roof, a game set, a map, or a screen.