iris /īˈris/

1. The contractile curtain perforated by the pupil, and forming the coloured part of the eye
2. A plant of the genus Iris with tuberous roots, long tapering leaves and large showy flowers
3. An iris diaphragm
4. An appearance resembling the rainbow

īˈrisate transitive verb

To make iridescent

irisation /ī-ri-sāˈshən/ noun

irised /īˈrist/ adjective

Showing colours like the rainbow

• turn over a new leaf
• turnovers
• turnover tax
• turnover taxes
• turn-penny
• turnpike
• turnpike man
• turnpike men
• turnpike road
• turnpike roads
• turnpikes
• turnpike stair
• turn Queen's evidence
• turn round
• turnround
• turnrounds
• turns
• turn-screw
• turn-screws
• turnskin
• turnskins
• turnsole
• turnsoles
• turn someone round one's little finger
• turn someone's brain