(1):

(n.) The essence; the best part.

(2):

(n.) One of a pair; a match; a companion; an intimate associate.

(3):

(v. t.) To fill with, or as with, marrow of fat; to glut.

(4):

(n.) The tissue which fills the cavities of most bones; the medulla. In the larger cavities it is commonly very fatty, but in the smaller cavities it is much less fatty, and red or reddish in color.