The point on a stock chart when a security and an indicator intersect. Crossovers are used by technical analysts to aid in forecasting the future movements in the price of a stock. In most technical analysis models, a crossover is a signal to either buy or sell.
Below we have a stock that falls below its 20-day moving average - a bearish sign.
An example of a crossover would be when the security line breaks through its 25-day moving average which may be a signal to buy the stock. Some of the indicators that use crossovers are "moving average" and "Bollinger bands".
Introduction to Technical Analysis - Here is an easy-to-understand tutorial on the various tools used in technical analysis, including moving averages, RSI, Bollinger bands, stock chart patterns, and much more.
The Basics of Bollinger Bands - Discover this moving-averages technique of using two trading bands representing price targets.
Price Patterns - Part 1 - To "find your game" in technical analysis, you need to be able to recognize reversals and continuations as they form.