'cast off' definitions:

Definition of 'cast off'

(from WordNet)
verb
Get rid of; "he shed his image as a pushy boss"; "shed your clothes" [syn: shed, cast, cast off, shake off, throw, throw off, throw away, drop]
verb
Make the last row of stitches when knitting [ant: cast on]

Synonyms of 'cast off'

From: Moby Thesaurus