a collection of data duplicating original values stored elsewhere or computed earlier, where the original data are expensive to fetch or compute relative to reading the cached
In marijuana smoking, for a bowl to be 'cached', means that it's completely ash and can't be smoked anymore.
Never hand someone a cached bowl without announcing that it's cached, it's rude and unacceptable.
Here's the bong man, it's cached but it's your turn to reload anyway.
This bowl's cached, time to reload that shit!