Women's clothing that has a fitted top and a flared skirt that is widest at the hemline(noun)
WordNet. Princeton University. 2010.
Use "a-line" in a sentence
"Victorian clothing, or what we know as Victorian clothing, consisting of the white blouse with ruffs at the neck and wrists, with the a-line skirt, has existed in any generation."
"Just this week I found an a-line blue skirt and a madras skirt both in cotton."
"For me, I have found a-line skirts the most flattering style for my figure."