/ ˈbændəʊ; NAmE -doʊ/ noun
1.
a narrow band worn around the head to hold the hair in place
2.
a piece of women's clothing that is tied around the body to cover the breasts :
a bandeau bikini top
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WORD ORIGIN
early 18th cent.: from French , from Old French bandel , diminutive of bande , of Germanic origin; related to bind .