Webster’s Revised Unabridged Dictionary · 1913
Overcast
O′ver·cast′, v. t. 1. To cast or cover over; hence, to cloud; to darken.
Those clouds that overcast your morn shall fly. Dryden.
2. To compute or rate too high. Bacon.
3. (Sewing) To take long, loose stitches over (the raw edges of a seam) to prevent raveling.