I have Googled but can't even find this word sense in online dictionaries. I've heard the word [kæʃt] used in the sense of "expended", such as in the following examples:
My drink is [kæʃt]. (implying that it is empty)
The bowl is [kæʃt]. (implying there is no more marijuana)
I assume it would be spelled "cashed" (and may have an etymological relationship to "cashing out" at a casino) or "cached", but I am not sure. How is it spelled? Also, please offer a definition of this term if my usage is incorrect (the above two examples are the only contexts in which I've heard it used—perhaps it is only used in reference to alcohol and drugs).