The word helicline is a unique term that refers to a spiral-shaped structure or line. However, there are several synonyms available for this word that you can use to convey the same idea. Some of the synonyms for the helicline include Helix, spiral, coiled, twisted, winding, curling, curving, and meandering. These words describe a structure that has a bending or twisted shape, which can be seen in various natural and artificial structures. Whether you're describing a staircase, a DNA strand, or a snail's shell, these synonyms offer a range of options to choose from to make your writing more concise and engaging.