Marrow, the substance contained in the cavities of animal bones: “my flesh is soft and plump, my m. burning,” Ven. 142. “spending his manly m. in her arms,” All's II, 3, 298. “would he were wasted, m., bones and all,” H6C III, 2, 125. “when crouching m. in the bearer strong cries of itself 'No more',” Tim. V, 4, 9. “the pith and m. of our attribute,” Hml. I, 4, 22. Plur. --s: “lust and liberty creep in the minds and --s of our youth,” Tim. IV, 1, 26. “dry up thy --s, vines, and plough-torn leas,” IV, 3, 193.