1 in knitting, to use special stitches to finish the thing you are making
2 relating to things, usually clothes, that you no longer want:
The charity accepts donations of cast-off clothes, books, and dishes.
These designers specialize in reworking cast-off garments into highly original one-off outfits.
Because of the web it is possible for a collector anywhere in the world to obtain cast-off vintage toys from the United States.