[he.lix] n, pl he.li.ces also he.lix.es [L, fr. Gk; akin to Gk eilyein to roll, wrap--more at voluble] (1563) 1: something spiral in form: as a: an ornamental volute b: a coil formed by winding wire around a uniform tube
2: the incurved rim of the external ear
3: a curve traced on a cylinder or cone by the rotation of a point crossing its right sections at a constant oblique angle; broadly: spiral 1b