Convolution

Webster's Dictionary of the English Language

·noun The act of rolling anything upon itself, or one thing upon another; a winding motion.

II. Convolution ·noun An irregular, tortuous folding of an organ or part; as, the convolutions of the intestines; the cerebral convolutions. ·see Brain.

III. Convolution ·noun The state of being rolled upon itself, or rolled or doubled together; a tortuous or sinuous winding or fold, as of something rolled or folded upon itself.