Crossword puzzle clue "it's responsible for controlling a pupil"

Here are the possible solutions for it's responsible for controlling a pupil clue

Answer
Clue
Relevancy
iris
Clue
It's responsible for controlling a pupil
Definition
to give the form of a rainbow to
graduatestudent
Clue
Former pupil/present pupil
aperture
Clue
Device controlling amount of light admitted
Definition
an opening
ballcock
Clue
Device controlling inflow into a cistern
Definition
the stopcock in a cistern
beekeeper
Clue
One controlling drones
Definition
one who keeps bees
bossy
Clue
Controlling
Overly controlling
Definition
a cow
brains
Clue
Computers' controlling mechanisms
Definition
BRAIN, to dash out the brains of

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