v. To sew together the edges of two pieces of fabric, with every stitch passing over the join
The Century Dictionary and Cyclopedia
To sew in a manner similar to overcasting, but more closely, so as completely to cover the edge of the material, and with greater care.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. sew (two edges) with close stitches that pass over them both
Word Usage
"Abby, with a firm but not unkind grasp, took Shaker Jane and Mary by their little hands and said, "Morning's not the time for play; run over to Sister Martha and help her shell the peas; then there'll be your seams to oversew.""