What is the meaning of Low/ High prices?
When referring to a candlestick or bar the high is the highest price traded during that time period and the low is the lowest price traded during that period.
Candlestick charts display the high, low, open, and closing prices of a instrument for a specific period. The high price is the highest traded price in that particular period and the low price is the lowest traded price in that particular period.
Hellooo Nnabu! 
Hmm. 
I pretty much agree with what the others have said. But if you need a more detailed explanation, I suggest that you check out the lesson on this. 
There are other terms that would also be explained so you might find it useful!
Okay Rose, thanks.
They reflect the minimum and maximum trading price for that specific time period.