This is the 357th most frequent Persian word.
شاخص
Indicator; index.
In this sentence, 'شاخص' refers to a measure or index used to signify the status of stock market performance.
شاخص بورس امروز افزایش یافت.
The stock market index rose today.
In this context, 'شاخص' denotes an indicator that measures traffic congestion levels.
شاخص ترافیک در شهر تهران بالا است.
The traffic congestion index in Tehran is high.
Here, 'شاخص' is used to represent an index indicating the levels of air pollution.