A "knit skirt" refers to a skirt that is made from knitted (stretchy) fabric rather than woven (non-stretchy) fabric.
Sentences with «knit skirt»
This full jersey knit skirt is as comfortable as a t - shirt and can be dressed up with heels and a necklace or dressed down with a tank - top and flat sandals. (looplooks.net)
I'd ditch the white jeans and bring a black knit skirt or dress. (unefemme.net)
I especially like the skirt with leggings idea — I've been living in knit skirts as an alternative to shorts this pregnancy, and it's like wearing pajamas all the time. (corporettemoms.com)