Shadow

A term that apparently refers to the bewilderment and darkness accompanying certain enchantments. Sauron's tower of Barad-dûr was surrounded by Shadow, and the term is also associated with the land of Lórien and with the Ents.

The term is also used more broadly in reference to the darkening of the minds of people as a result of the Marring of Arda, especially in reference to the Númenóreans in the last half of the Second Age.