Roll neck is a common term to describe a type of sweater with a high, close-fitting collar that rolls over itself. However, there are several synonyms for this fashion staple that are equally catchy and descriptive. Turtleneck, for instance, is a popular alternative, featuring a higher collar that covers the neck entirely. Polo neck is another term that is often used in British English, offering a slightly looser version of the roll neck with a patterned or textured collar. Mock neck is a similar style with a smaller, more discreet collar that doesn't quite fold over. Finally, funnel neck is a particularly snug type of roll neck that hugs the throat and chin for maximum warmth and style.