A "knit dress" refers to a type of dress that is made from knitted fabric, which means the fabric is created by interlocking loops of thread. Full definition
At first I wanted to wear this black knitted dress with a black cardigan (of course, how predictable can you be) but then I thought about red and pink. (nancysfashionstyle.com)
The maternity knit dress in the elegant and flattering kimono - inspired cut is very in. (pregnancy-info.net)
Layer this piece over a black knit dress and knee - high black boots to let the sweater really shine. (thefashionablehousewife.com)