The phrase "hour chart" refers to a graphical representation that displays data or information over a period of time, specifically for each hour. It helps to visualize patterns, trends, or changes that occur within an hour. Full definition
I will obviously keep my eye on the 1 hour and 4 hour charts for another price action signal. (learntotradethemarket.com)
As I discussed thoroughly in a recent article on trading daily chart time frames, you can significantly improve your trading by ignoring time frames under the 1 hour chart all together. (learntotradethemarket.com)