Definition of "castable"

Able to be cast. In particular:

1. Capable of or suitable for being assigned a role in a play, film, etc.  quotations  examples

   Quotations

   • I always assumed that I'd be more castable as I got older. I'm a character actress and a comedian —not some pretty little ingénue. I figured I'd grow […]

     2009 October 13, Susie Essman, What Would Susie Say?: Bullsh*t Wisdom About Love, Life and Comedy, Simon and Schuster

   • Most importantly, agents want to know you are castable. The easiest way to show them that, obviously, is to get cast in stuff. You might have a long and impressive resume from your acting school or community theater back home […]

     2020 February 24, Harlan Post, Rolling the Dice: Everything You Want to Know About Becoming a Hollywood Actor, Archway Publishing

2. Capable of being performed and brought forth (as a spell or magic).  quotations  examples

   Quotations

   • page=144 Witches Spellbook is advertised [as] "For those who'd like to be witches and get their hands on a batch of castable spells." This book also includes a shopping guide for such necessities as bottled bat's blood.

     1972, William Joseph Whalen, Minority Religions in America

   • Magic tomes […] provided access to more castable spells than would fit in most artifacts, up to two or three dozen. The military offered its soldiers a few portable arrays made of precious metals wrought into the desired shapes, but those would be even less accessible […]

     2021 December 26, Azalea Ellis, A Binding of Blood: A Gaslamp University Hard Fantasy, Seladore Publishing

3. (engineering) Capable of being cast, as in a mould.  examples

4. (programming) Capable of being cast to another data type.  examples

(engineering) Any substance that can be cast, as in a mould.  examples