iris (
http://definr.com/iris)
n 1: plants with sword-shaped leaves and erect stalks bearing
bright-colored flowers composed of three petals and
three drooping sepals [syn:
flag,
fleur-de-lis, {sword
lily}]
2: muscular diaphragm that controls the size of the pupil; it
forms the colored portion of the eye
3: diaphragm consisting of thin overlapping plates that can be
adjusted to change the diameter of a central opening [syn:
iris diaphragm]