"convolution" in the noun sense
1. whirl, swirl, vortex, convolution
the shape of something rotating rapidly
2. gyrus, convolution
a convex fold or elevation in the surface of the brain
3. convolution
the action of coiling or twisting or winding together
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License