noun, noun or participle which takes 'suru'
cover stitch; topstitch
A sewing technique that creates parallel lines of stitching on the right side while finishing the raw edge on the wrong side; common in dressmaking and garment construction.
from English cover stitch
このTシャツの裾はコバステッチで仕上げてあります。
The hem of this T-shirt is finished with a cover stitch.
ニット生地の端をコバステッチする。
I cover-stitch the edge of the knit fabric.