Definition of hearing dog noun from the Oxford Advanced Learner's Dictionary


hearing dog

BrE BrE//ˈhɪərɪŋ dɒɡ//
; NAmE NAmE//ˈhɪrɪŋ dɔːɡ//
Domesticated mammals
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a dog trained to make a deaf person (= person who cannot hear well) aware of sounds such as the ringing of a telephone or a doorbell See related entries: Domesticated mammals
See the Oxford Advanced American Dictionary entry: hearing dog