The Bollinger Bands indicator, often referred to as "Bollinger Bands," is a technical analysis tool used to measure market volatility and identify overbought or oversold conditions. In Tamil, it can be described as follows:

**Bollinger Bands:**

- **Definition:** Bollinger Bands is a technical issue used to measure the bottom line, discount, and threats of a financial market metal.

- **Structure:** It consists of three lines: the center line (ie, a simple diagonal line), the upper band and the lower band. Uptrend and downtrend bands threaten a few points above and below the centerline.

- **Function:** Marking the market bottom helps determine when the market is likely to rise or fall. Normally, he says, when the market crosses the upper bands, it becomes bearish, and when it crosses the lower bands, the market can rise.

This description provides an overview of how Bollinger Bands work and their purpose in market analysis.