Origins
From the French cache (a hidden store) and the Old English mearg (marrow, the deep interior of the bone). A hoard kept where no one looks.
Meaning
A quiet math is always running. How much do we have, how much will we need, what if someone asks for some.
We bring more than enough, and even then we hide a little extra somewhere only we know. Cachemarrow is the secret reserve, the supply tucked into the places no one thinks to check.
The hiding feels like prudence. Underneath it is a small, fixed conviction that we cannot be trusted to have enough, and that the world cannot be trusted to give it.
Usage
Cachemarrow was a constant for me back then, always one stash more than anyone knew about.