An oil well that produces oil with great force and abundance, or a person who gushes excessively.
From gush plus agent suffix '-er' (one who or that which does); originally used in petroleum industry to describe high-pressure wells.
Early oil prospectors called unexpectedly productive wells 'gushers,' and when the first one struck in Texas in 1901, it created a new American mythology of sudden wealth—'gusher' became synonymous with oil boom fortune.
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