adjective, verb, -cast, -cast⋅ing, noun | 1. | overspread or covered with clouds; cloudy: an overcast day. |
| 2. | Meteorology. (of the sky) more than 95 percent covered by clouds. |
| 3. | dark; gloomy. |
| 4. | Sewing. sewn by overcasting. |
| 5. | to overcloud, darken, or make gloomy: Ominous clouds began to overcast the sky. |
| 6. | to sew with stitches passing successively over an edge, esp. long stitches set at intervals to prevent raveling. |
| 7. | to become cloudy or dark: By noon it had begun to overcast. |
| 8. | Meteorology. the condition of the sky when more than 95 percent covered by clouds. |
| 9. | Mining. a crossing of two passages, as airways, dug at the same level, in which one rises to pass over the other without opening into it. Compare undercast (def. 1). |