'Marrowbone' definitions:

Definition of 'marrowbone'

(from WordNet)
noun
A bone containing edible marrow; used especially in flavoring soup

Definition of 'Marrowbone'

From: GCIDE
  • Marrowbone \Mar"row*bone`\, n. A bone containing marrow; pl. ludicrously, knee bones or knees; as, to get down on one's marrowbones, i. e., to kneel. [1913 Webster]