Definition of "Hem" :

noun: the edge of a piece of cloth; especially the finished edge that has been doubled under and stitched down

"The hem of her dress was stained."

noun: the utterance of a sound similar to clearing the throat; intended to get attention, express hesitancy, fill a pause, hide embarrassment, warn a friend, etc.

verb: utter hem' or ahem'

verb: fold over and sew together to provide with a hem

"Hem my skirt."