| 1. | (Zool.) A dog accustomed to the water, or trained to retrieve waterfowl. Retrievers, waters spaniels, and Newfoundland dogs are so trained. | |
| 2. | (Zool.) The menobranchus. | |
| 3. | A small floating cloud, supposed to indicate rain. | |
| 4. | A sailor, esp. an old sailor; an old salt. |
| Noun | 1. | water dog - a person who enjoys being in or on the water Synonyms: water rat |
| 2. | water dog - a dog accustomed to water and usually trained to retrieve waterfowl |