It’s a great question, technically because it is a made up word.
Yet, as a presence, brand (done in air quotes) or a simple URL that you dear reader are now on it implies a very subjective term; it could mean something else for everyone.
Since there are a range of marrows, and many different schools of thought regarding them, but at marrowmark.xyz the aim is to avoid being dogmatic and consider marrow as going in the direction of harmony with other people, animals, and the rest of the natural world.
I believe that the most useful kind of marrow is the one in each moment or meaningful marrow: spontaneous decisions in-line with our deep aspirations, rather than with some set of purely though provoking rules.
Here are some other words that feel might as well define what I'm championing here as Marrowmark: