Means 'Redhorn'. The name is a proper compound noun (caran + ras) in Sindarin. Also called Baraz, Barazinbar (both Khuzdul), the Cruel and Redhorn.

Caradhras rises above the Redhorn Pass that the Fellowship tried to use on their way to Lothlórien. They had to turn back because of a sudden blizzard.

It is one of the three of the Misty Mountains that are over the Mines of Moria, the other two being Celebdil and Fanuidhol.
Encyclopedia entry originally written by Hathaldir