hems means: The hem is at the ends of the cloth where the fabric has been folded in half and then sewn to keep it from falling apart. Hemming involves using small stitches that are almost invisible to hold the fabric in place. The length of the hem can also define the overall silhouette of an outfit from mini-to maxi. (in Fashion Dictionary)

What else does hems mean?

A hem is the lower edge of garments that have been sewn to hide their raw edges. There are three main types of hems: plain, or rolled hem. This is used for delicate fabric and is sewn in place. Faced hem is made with a piece sewn at the bottom of the garment. (in Fashion Dictionary)