What is another word for "marrow"?

Roget's Thesaurus (1911) lists these synonyms for "marrow": abdomen, abdominal, absolve, air, amende, amends, amianth, amianthus, and, annihilator, apologize, apology, asbestos, ashes, atone, atonement, attic, axial, axis, azygous, backbone, beg, belly, benumb, bite, bosom, box, breast, brigade, bring, buoyancy, burn, burnt, cave, center, central, centrality, centralization, centralize, centrally.