A 'mosaic' (mo-ZAY-ik) is a piece of art made from small pieces of tile stuck to a wall or to a board. (A mosaic can also be made of pieces of glass, or some other material).
This blog is mainly to explain a different English language expression every day. Sometimes I post other stuff. I also have a YouTube channel which is mostly about computer software: https://www.youtube.com/englishspacedog
