1. an oil well that produces oil in large quantities without pumping
2. a person who expresses emotions or enthusiasm in an excessive or unrestrained way
Usage: informal

Examples

• The oil company struck a gusher that produced thousands of barrels per day.
• When the drill hit the reservoir, it created a massive gusher.
• The discovery of the gusher made the landowner wealthy overnight.
• She’s such a gusher when it comes to compliments about her children.
• The gusher spouted oil high into the air before workers could cap it.
• He became a real gusher whenever he talked about his favorite sports team.