irises

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals
  2. noun 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
  3. noun diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening

Synonyms

iris, flag, fleur-de-lis, sword lily

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