from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A dog trained to assist a deaf or hearing-impaired person by signaling the occurrence of certain sounds, such as a ringing telephone or doorbell.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A dog trained to assist the deaf, alerting the deaf person to doorbells, smoke alarms etc.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. dog trained to assist the deaf by signaling the occurrence of certain sounds
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