hearing dogBrE /ˈhɪərɪŋ dɒɡ/ 🔊NAmE /ˈhɪrɪŋ dɔːɡ/ 🔊 nouna 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 导聋犬（经训练用来提醒耳聋者如电话铃、门铃等声响）