1) Sleeve hole 
In sewing, the armscye is the armhole, the fabric edge to which the sleeve is sewn. The length of the armscye is the total length of this edge; the width is the distance across the hole at the widest point. == Etymology == Multiple theories for the etymology of `armscye` have been proposed. The scholarly etymology has the origin as `arm` + `s...
The circumference of the Armhole ( where sleeve is sewn)
The opening in a bodice to which the sleeve is attached; also known as an armhole.
the armhole opening in a garment.