I. noun
: the principal vein or lode of a region (as of gold-bearing quartz along the western foothills of the Sierra Nevada, Calif.)
II. noun
: a principal source or supply
I. noun
: the principal vein or lode of a region (as of gold-bearing quartz along the western foothills of the Sierra Nevada, Calif.)
II. noun
: a principal source or supply
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012