A top, usually a tank top or sleeveless shirt, that is cut short, designed to expose the wearer's midriff, or navel, sometimes even revealing underboob.
A crop top and crop top overhang are frequently signature elements in the outfit of Shimakaze from Kantai Collection and Matoi Ryuuko from Kill La Kill.
The following tags implicate this tag: crop_top_overhang (learn more).