The meaning behind the more generic representation of the wings is freedom, a sign of inspiration and desire to fly to achieve a goal (real or spiritual). Being associated with the birds, is from where feathers get their special features, speed and grace.
They are a kind of tattoo quite influenced by the placement on the body. If coupled with some other element it can be made almost anywhere, but in the case of solitary representation, they usually are drawn on the back.
Among the most common representations are those related to the world of the fairies, perhaps the most common ones to recreate the image of an angel, those of mythological dragons and griffins or ones made with stylized tribal motifs.