The term GOWN FEATURE can be summarized by two crossword solutions: TRAIN (5 letters) and SEQUIN (6 letters). A TRAIN is a feature of a gown that is a long piece of fabric that trails behind the dress. It is usually made of a heavier material than the rest of the dress and is often seen in formal gowns. Sequins are small, shiny discs that are often sewn onto a garment to add sparkle and texture. They are commonly used on evening gowns and other formal wear.