I. ˈmer-(ˌ)ō, ˈma-(ˌ)rō noun
Etymology: Middle English marowe, from Old English mearg; akin to Old High German marag marrow, Sanskrit majjan
Date: before 12th century
1.
a. : bone marrow
b. : the substance of the spinal cord
2.
a. : the choicest of food
b. : the seat of animal vigor
c. : the inmost, best, or essential part : core
personal liberty is the marrow of the American tradition — Clinton Rossiter
3. chiefly British : vegetable marrow
• mar·rowy ˈmar-ə-wē adjective
II. noun
Etymology: Middle English marwe, marrow
Date: 1516
chiefly Scottish : one of a pair