| mare | |
| 1. n. An adult female horse. | |
| 2. n. (pejorative) A foolish woman. | |
| 3. n. (obsolete, or historical) A type of evil spirit formerly thought to sit on the chest of a sleeping person; also, the feeling of suffocation felt during sleep, attributed to such a spirit. | |
| 4. n. (colloquial) ((clipping of nightmare)) A nightmare; a frustrating or terrible experience. | |
| I'm having a complete mare today. | |
| 5. n. (planetology) A large, dark plain, which may have the appearance of a sea. | |
| 6. n. (planetology) On Saturn's moon Titan, a large expanse of what is thought to be liquid hydrocarbons. | |
