mother lode 
noun Mining
1A principal vein of an ore or mineral.Based in Walnut Creek and Lotus, Calif. - right by the mother lode that drew the forty-niners out West for the Gold Rush - the business seems isolated, deep in canyon country....
- Bettors look at statistics, angling for some play, some pattern, or a factor someone might have overlooked - much like a gold miner hoping someone's overlooked a nugget here and there or bypassed a mother lode.
- The California 49ers looked upstream hoping to find the mother lode, and that's exactly what they called the system of gold veins they discovered.
1.1A rich source of something: your portfolio holds a mother lode of opportunities...
- ‘I think we hit the emotional mother lode when we met Keith,’ says Rubin.
- The mother lode was struck when the designers hit on a way to improve power management and increase battery life for cell phones and other portable electronics.
- While there have been revisions of Anthony's original insights, he certainly was the first to strike the mother lode.
- Beecham, Sir Thomas
- beechdrops
- Beecher, Catherine
- Beecher, Henry Ward
- beech fern
- Beeching, Richard
- beech marten
- beechmast
- beechnut
- beech tree
- beechwood
- be economical with the truth
- bee dance
- beedi
- bee-eater
- beef
- beefalo
- beef bourguignon
- beefburger
- beefcake
- beefeater
- beefily
- beefiness
- bee fly
- beef road