A gap in the price movement of a security that occurs as a security begins to experience a significant change in direction, typically from a rise to a fall.  On the chart, if there is a gap between a strong rise in prices and a sudden fall in prices, it is considered an exhaustion gap.  An exhaustion gap is sometimes seen as just a temporary reversal, with the stock expected to resume its climb.
Related information about exhaustion gap:
- Exhaustion Gap Definition | Investopedia
 An exhaustion gap usually reflects falling demand for a particular stock. The   image shows a gap at the end of a large upward movement, signaling a reversal.
 
- Gaps and Gap Analysis - ChartSchool - StockCharts.com
 The high volume was the giveaway that this was going to be, either, an   exhaustion gap or a runaway gap. Because of the size of the gap and the near   doubling ...
 
- Exhaustion Gap - Exhaustion Gap Stock | TheStockBandit.com
 Exhaustion gaps are reversal gaps, trading exhaustion gap stocks offers profit   potential.
 
- Gap (chart pattern) - Wikipedia, the free encyclopedia
 Exhaustion gap signals end of a move. These gaps are associated with a rapid,   straight-line advance or decline. A reversal day can easily help to differentiate ...
 
- Exhaustion Gap
 Exhaustion gaps (discussed on page 223 of the textbook) occur at the end of   powerful trends. This 60-minute SPY chart shows the exhaustion gap that   occurred ...
 
- Bulkowski's Price Gaps
 Violent reversals can follow an exhaustion gap, so consider taking a position in   the new direction. Stop loss, Gaps are places of price support or resistance, ...
 
- Exhaustion Gap Definition & Trading Strategy
 An exhaustion gap comes at the end of an impulsive move. Exhaustion gaps are   accompanied by an abnormal increase in volume, followed by a sharp reversal ...
 
- Exhaustion Gap - Financial Dictionary - The Free Dictionary
 In technical analysis, a gap on a chart representing a large difference in price   between two succeeding trades after prices have been rising significantly.