castable

Short definition from Wiktionary

Adjective

1. 1
   Able to be cast. In particular: Capable of or suitable for being assigned a role in a play, film, etc.
2. 2
   Able to be cast. In particular: Capable of being performed and brought forth (as a spell or magic).
3. 3
   Able to be cast. In particular: Capable of being cast, as in a mould.
4. 4
   Able to be cast. In particular: Capable of being cast to another data type.

Noun

1. 1
   Any substance that can be cast, as in a mould.