Definition of maracas noun from the Oxford Advanced Learner's Dictionary

 

maracas

 noun
noun
BrE BrE//ˈrækəz//
 
; NAmE NAmE//ˈrɑːkəz//
 
[plural]
 
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a pair of simple musical instruments consisting of hollow balls containing beads or beans that are shaken to produce a sound Word Origin early 17th cent.: from Portuguese maracá, from Tupi.
See the Oxford Advanced American Dictionary entry: maracas