noun a narrow band worn around the head to hold the hair in place
A bandeau is a narrow band of fabric worn around the head or chest, often used as a fashion accessory or as part of a swimsuit.
In the context of swimwear, a bandeau refers to a strapless top that wraps around the bust, providing minimal coverage.
Bandeau can also refer to a type of headband or hair accessory that is worn to keep hair in place or for decorative purposes.