Edit
When the high part of a garment's leg opening stops upwards of the hip, near the waist or even farther, giving the illusion of long legs. Also known as high cut.
Also used when the strap of a bikini or pair of panties curves in a similar arc above the pelvis.
Where the leg opening/strap stops in relation to the navel is a good basis of the garment being highleg.
Do not confuse with thighhighs and other legwear.
See also
The following tags implicate this tag: highleg_bikini, highleg_buruma, highleg_dress, highleg_leotard, highleg_panties, and highleg_swimsuit (learn more).