- whirl, swirl, vortex, convolution - the shape of something rotating rapidly
--1 is a kind of round shape
- gyrus, convolution - a convex fold or elevation in the surface of the brain
--2 is a kind of structure, anatomical structure, complex body part, bodily structure, body structure
--2 is a part of cerebrum
--2 has particulars:frontal gyrus; temporal gyrus; parietal gyrus; occipital gyrus; central gyrus - convolution - the action of coiling or twisting or winding together
--3 is a kind of change of shape
Derived forms: verb convolve1, verb convolute1