'castoff' definitions:
- castaway,
- deep six,
- derelict,
- discard,
- discarding,
- disposal,
- dogie,
- dumping,
- elimination,
- flotsam,
- flotsam and jetsam,
- foundling,
- jetsam,
- jettison,
- junk,
- junking,
- lagan,
- orphan,
- refuse,
- reject,
- rejectamenta,
- rejection,
- removal,
- rubbish,
- scrapping,
- throwaway,
- trash,
- waif,
- waifs and strays,
- wastrel
