Definition of audio guide noun from the Oxford Advanced Learner's Dictionary

 

audio guide

 noun
noun
BrE BrE//ˈɔːdiəʊ ɡaɪd//
 
; NAmE NAmE//ˈɔːdioʊ ɡaɪd//
 
 
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a small device, usually with headphones, that visitors to a museum, gallery, city, etc. can hold in their hand and use to listen to recorded information while they are walking around The museum provides free audio guides.