We found 17 dictionaries that define the word hearing dog:

General (12 matching dictionaries)

1. hearing dog: Merriam-Webster
2. hearing dog: Oxford Learner's Dictionaries
3. hearing dog: American Heritage Dictionary of the English Language
4. hearing dog: Collins English Dictionary
5. hearing dog: Vocabulary.com
6. hearing dog: Wiktionary
7. hearing dog: Dictionary.com
8. Hearing dog: Wikipedia, the Free Encyclopedia
9. hearing dog: Rhymezone
10. hearing dog: FreeDictionary.org
11. hearing dog: Mnemonic Dictionary
12. hearing dog: TheFreeDictionary.com

Business (2 matching dictionaries)

13. hearing dog: Legal dictionary
14. hearing dog: Financial dictionary

Computing (1 matching dictionary)

15. hearing dog: Encyclopedia

Medicine (2 matching dictionaries)

16. hearing dog: Merriam-Webster Medical Dictionary
17. hearing dog: Medical dictionary

(Note: See hearing_dogs as well.)

Definitions from Wiktionary (hearing dog) ▸ noun:  A dog trained to assist the deaf, alerting the deaf person to doorbells, smoke alarms etc. Similar: deaf aid, deafie, deaf, dope dog, wingdog, tin dog, dog flap, dentiphone, ding-a-ling, drag hound, more... Phrases: hearing ear dog, more... ▸ Words similar to hearing dog ▸ Usage examples for hearing dog ▸ Idioms related to hearing dog ▸ Wikipedia articles (New!) ▸ Words that often appear near hearing dog ▸ Rhymes of hearing dog ▸ Invented words related to hearing dog