IPA: /ʌnˈkæst/
KK: /ʌnˈkæst/
Not having been shaped or formed into a specific object or structure.
The uncast metal was still in its raw form, waiting to be molded.
Uncast → It is formed from "un-" (meaning not) and "cast" (from Old English "castan", meaning to throw). The word "uncast" means not thrown or not cast.
Think of 'not' ('un-') throwing something ('cast') — that's why uncast means something that has not been thrown.