a blue chip is stock in a corporation with a national reputation for quality, reliability, and the ability to operate profitably in good times and bad.Bluechip companies are those which are listed in both BSE & NSE.
A blue chip stock are typically stocks like Reliance, Infosys, Microsoft etc, Well established and financially sound companies that has a proven track record after operating for many years. In India there are typically the stocks with has market capitalization of over 10,000 crores.
The roots of poker go back to over 200 years ago, they say that the blue chips were typically the highest value chip in most poker sets. Similar to how in poker people were calling the highest value chips as blue chips, people started calling high value stocks as blue chip stocks.
Nice info sir.