Trendline
A line connecting swing highs or lows to visualize the trend.
Full Definition
A trendline is a straight line drawn on a chart connecting significant price points. Uptrend lines connect higher lows; downtrend lines connect lower highs. Trendlines act as dynamic support or resistance. The more touches a trendline has without breaking, the more significant it becomes. Breaks of major trendlines often signal trend changes.