A "crease" refers to a line or fold that appears on a surface, often created by bending or pressing. It is commonly seen in materials like paper, fabric, or even skin. Creases can occur naturally over time or be intentionally made, such as when folding clothes or making origami. In sports, particularly in cricket, a crease is a marked line on the field that indicates specific areas for players. For example, the bowler's crease is where the bowler must deliver the ball, while the batsman's crease indicates where the batsman stands to hit the ball.