The term 'thin piece' can be described by three crossword solutions: SHEET (5 letters), SLIVER (6 letters), and SLICE (5 letters). A SHEET is a flat, rectangular piece of material such as paper or cloth. A SLIVER is a thin, narrow strip of something, usually a metal or wood. A SLICE is a thin, flat piece cut from a larger object, such as a cake or loaf of bread. All three words refer to a thin piece of something, but they each have slightly different meanings.