an irregularly shaped line a furrow in a surface a valley-like dip in the surface a fold or wrinkle in a material an area where the two sides of the material have been pressed together
crease which is an irregularly shaped line crease which is a furrow in a surface crease which is a valley-like dip in the surface crease which is a fold or wrinkle in a material crease which is an area where the two sides of the material have been pressed together