Emily Dickinson Lexicon

O-VER-CAST, v.t.

1. To cloud; to darken; to cover with gloom. The clouds that overcast our morn shall fly. – Dryden.
2. To cast or compute at too high a rate; to rate too high. The king in his account of peace and calms did much overcast his fortunes. – Bacon.
3. To sew over.