[grzm]

I believe your parent has it right: cast in this case means thrown or tossed. "to cause to move or send forth by throwing cast a fishing lure cast dice", sense 1a here:

https://www.merriam-webster.com/dictionary/cast

- https://en.wiktionary.org/wiki/the_die_is_cast

- https://idioms.thefreedictionary.com/die+is+cast

[aaronblohowiak]

fascinating! thank you!