(uncountable) The substance inside bones which produces blood cells. / (countable) A kind of vegetable like a large courgette/zucchini or squash. / The pith of certain plants.

(Tyneside, informal) A friend, pal, buddy, mate. / (Scotland or archaic) One of a pair; a match; a companion; an intimate associate.

plural of marrow

A surname.

plural of Marrow

(anatomy) The fatty vascular tissue that fills the cavities of bones, being the place where new blood cells are produced.

(chiefly Britain) the marrow squash

plural of bone marrow

plural of marrow smear

(medicine, pathology) microscope slide covered with film of aspirated bone marrow / the above's reported result, including aoth. cell count and morphology