The term "A-Line" typically refers to a style of clothing, particularly dresses and skirts, that is fitted at the top and gradually flares out towards the hem, resembling the shape of the letter "A." This silhouette is flattering for many body types, as it accentuates the waist while providing a comfortable fit around the hips and thighs. In addition to fashion, "A-Line" can also describe certain types of transportation, such as the A-Line train service in various cities. These services often connect key areas, making it easier for commuters to travel efficiently within urban environments.