Marowbone or Marrowbone: How To spell?
The word Marowbone is misspelled against Marrowbone, a noun meaning "A bone containing marrow; pl. ludicrously, knee bones or knees; as, to get down on one's marrowbones, i. e., to kneel."
Marrowbone has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings ma & owbone which should not be misspelled with single 'R'
Wrong Spelling:  ma-r-owbone  Correct Spelling:  ma-rr-owbone 
Find more incorrect spellings of Marrowbone to spell right way.