say it: OH-vur-kast
overcast is a noun, verb and adjective meaning "the state of the sky when it is covered by clouds". It carries 8 recorded senses.
the state of the sky when it is covered by clouds
gloomy semidarkness caused by cloud cover
a long whipstitch or overhand stitch overlying an edge to prevent raveling
a cast that falls beyond the intended spot
filled or abounding with clouds
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for overcast come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.