Tailfins are the distinct, wing-like structures found perched atop the body of an automobile. These ornamental features became popular in the late 1940s and early 1950s, and were commonly seen on American cars throughout the 1950s and 60s. While the term 'tailfin' is established and widely recognised, there are some interesting synonyms that can be used to describe these decorative features, including: "fender skirts," "fishtail quarters," "lapstrake," and "tail circles". Each offers a slightly different interpretation of the structure, from the encasing of the wheel well to the sleek curvature of the fins themselves. Synonyms can help to enrich writing by introducing new language and adding colour to descriptions.