Plural of hem: the finished edge of a piece of cloth

• Finished edges of garments, curtains, or other fabrics

Third-person singular present of hem: to sew a hem

• Finishes an edge by folding and stitching

Third-person singular present of hem: to utter "hem"

• Hesitates or coughs lightly while speaking

Plural of hem meaning the vocal sound hem

• Repeated hesitant or attention-getting throat sounds

Initialism: helicopter emergency medical service

• Air ambulance service providing prehospital critical care