Noun

1. A migraine.
2. A fancy, a whim, a freak, a caprice.
3. Usually in the plural, any of various diseases of animals, especially horses, marked by a disturbance of equilibrium and abnormal gait and behaviour such as staggers or a sudden vertigo, sometimes followed by unconsciousness.
4. Usually in the plural - depression, low spirits, unhappiness.
5. A type of European deep water flatfish.