the round, pigmented membrane surrounding the pupil of the eye, having muscles that adjust the size of the pupil to regulate the amount of light entering the eye
any of a large genus (Iris) of perennial plants of the iris family, with sword-shaped leaves and conspicuous flowers composed of three petals and three drooping sepals of widely varying color
the flower of these plants
adjective
designating a family (Iridaceae, order Liliales) of monocotyledonous plants, including crocuses and gladioluses