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A dog trained to assist a deaf or hearing-impaired person by signaling the occurrence of certain sounds, such as a doorbell or fire alarm.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Medicine) a dog that has been specially trained to help deaf or partially deaf people by alerting them to sounds such as a ringing doorbell, an alarm, etc
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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|Noun||1.||hearing dog - dog trained to assist the deaf by signaling the occurrence of certain sounds|
working dog - any of several breeds of usually large powerful dogs bred to work as draft animals and guard and guide dogs
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