Curved Iris Scissors

scissors
An instrument used for cutting cloth, paper, and other thin material, consisting of two blades laid one on top of the other and fastened in the middle so as to allow them to be opened and closed by a thumb and finger inserted through rings on the end of their handles
a wrestling hold in which you wrap your legs around the opponents body or head and put your feet together and squeeze
an edge tool having two crossed pivoting blades
a gymnastic exercise performed on the pommel horse when the gymnast moves his legs as the blades of scissors move
An action in which two things cross each other or open and close like the blades of a pair of scissors

curved
having or marked by a curve or smoothly rounded bend; "the curved tusks of a walrus"; "his curved lips suggested a smile but his eyes were hard"
(Curving) In education, grading on a curve (also known as curved grading or simply curving) is a statistical method of assigning grades designed to yield a pre-determined distribution of grades among the students in a class.
Having the form of a curve; bent
In mathematics, a curve is, generally speaking, an object similar to a line (geometry) but which is not required to be straight. Often curves in two-dimensional (plane curves) or three-dimensional (space curves) Euclidean space are of interest.

iris
(of an aperture, typically that of a lens) Open or close in the manner of an iris or iris diaphragm
plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals
muscular diaphragm that controls the size of the pupil which in turn controls the amount of light that enters the eye; it forms the colored portion of the eye
diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening