The term 'Thin Line or Band' can be summarized by the crossword solution 'Stria' which is a five letter word. Stria is a term used to describe a thin line or band, usually referring to a linear feature or structure in the body. It is most commonly used to describe the thin lines that form on the surface of the skin due to aging or other factors. Stria can also refer to a thin line or band of color, texture, or material.