1 (in full vegetable marrow) a a large usu. white-fleshed edible gourd used as food. b the plant, Cucurbita pepo, yielding this.
2 a soft fatty substance in the cavities of bones, often taken as typifying vitality.
3 the essential part.
Phrases and idioms:
to the marrow right through.
Derivatives:
marrowless adj. marrowy adj.
Etymology: OE mearg, maeligrg f. Gmc
Useful english dictionary. 2012.