marrow

Bone marrow.

The spinal cord.

The marrow squash.

The inmost, choicest, or essential part; the pith.

Strength or vigor; vitality.

To fill with marrow or with fat.

A companion or mate; an associate; an intimate friend; a fellow; hence, one of a pair of either persons or things; a match: as, your knife’s the very marrow o’ mine.

To associate with; hence, to match; fit.

Soft; tender.