Were Balrogs winged?

[noldo]

Balrogs DO have wings.

As Mithadan already stated:

The Balrog made no answer. The fire in it seemed to die, but the darkness grew. It stepped forward slowly on to the bridge, and suddenly it drew itself up to a great height, and its wings were spread from wall to wall;...

I'm not sure whether Tolkien is referring to the "darkness" or the "balrog", but when it says wings it really does say wings.