mar ‧ row /ˈmærəʊ $ -roʊ/ BrE AmE noun
[ Language: Old English ; Origin: mearg ]
1 . [uncountable] the soft fatty substance in the hollow centre of bones SYN bone marrow :
a bone marrow transplant
2 . [uncountable and countable] British English a large long dark green vegetable that grows on the ground
3 . chilled/frozen/shocked etc to the marrow British English literary very cold, shocked etc