1 an untidy line on paper, material, a piece of clothing, etc that should not be there 折痕；褶子: Your shirt needs ironing, it's full of creases. 你的衬衫满是皱纹，要烫一烫。When I unrolled the poster, there was a crease in it. 我把卷着的海报打开时，看见一条折痕。

2 a tidy straight line that you make in sth, for example when you fold it （因折迭而出现的）褶子: He had a sharp crease in his trousers. 他的裤子上有一道清楚的褶子。