overcast

Short definition from Wiktionary

Noun

1. 1
   A cloud covering all of the sky from horizon to horizon.
2. 2
   An outcast.
3. 3
   A place where one roadway crosses another, specifically where an airway was built across the top of another airway for ventilation purposes.

Adjective

1. 1
   Covered with clouds; overshadowed; darkened; (meteorology) more than 90% covered by clouds.
2. 2
   In a state of depression; gloomy; melancholy.

Verb

1. 1
   To overthrow.
2. 2
   To cover with cloud; to overshadow; to darken.
3. 3
   To make gloomy; to depress.
4. 4
   To be or become cloudy.
5. 5
   To transform.
6. 6
   To fasten (sheets) by overcast stitching or by folding one edge over another.