In trading, an "order block" refers to a specific area on a price chart where there is a significant concentration of limit orders that have yet to be executed. These orders represent a level at which many traders have chosen to either buy or sell a particular asset, based on their analysis of market conditions and other factors. Because of the large number of orders at this level, the order block can be a significant area of support or resistance for the asset's price. Traders may look to these order blocks to identify potential entry or exit points for their trades, as they represent a significant level of market interest and activity.
Overall, the presence of an order block can be an important signal for traders, providing valuable insight into the current state of market sentiment and helping to inform their trading strategies.