In general, "terroir" is a term used to describe a sense of place and the way that affects the final flavors of a wine.
Terroir is a French term with a loose definition and with no literal English translation.  The word encompasses various things, though in general, it means “a sense of place.” 

Essentially, terroir encompasses all of the factors that go into producing wine grapes in a vineyard, from the climate to the soil to the elevation to the culture of the people making it.