1. An edge or border on a piece of cloth, especially a finished edge, as for a garment or curtain, made by folding an edge under and stitching it down.

2. The height or level of the bottom edge of a skirt, dress, or coat; a hemline.

1. To fold back and stitch down the edge of.

2. To surround and shut in; enclose: a valley hemmed in by mountains. See Synonyms at enclose.