"Consensus estimate" is when a group of smart people make a prediction together. Imagine you and your friends all trying to guess how many jellybeans are in a jar. You might all have different guesses, but if you put all your guesses together and find the average, that's like a consensus estimate. Usually, people make consensus estimates for things like how much money a company will make or how high the stock market will go. By working together, the smart people can come up with a pretty good guess about what might happen in the future.