headband
/ˈhɛdbænd/Definitions
1. noun
a strip of fabric or other material worn around the forehead, often for athletic or fashion purposes
“She wore a colorful headband to match her outfit.”
2. noun
a band or strip of metal, plastic, or other material placed around the head, used for medical or therapeutic purposes, such as to immobilize a broken neck or to support the head during a surgical procedure
“The doctor applied a headband to the patient’s injured neck to immobilize it.”