Definition of straightener in US English:

straightener

noun

  • See straighten

    • ‘First I would get out of the shower, turn on my hair straightener, scurry to my room, change, then scurry back to the bathroom.’
    • ‘The schoolmistress, known only as Miss Roberts, maintained discipline with a number of techniques no longer taught at teacher training college, including a cane and a wooden back straightener.’
    • ‘Great managers are enlargers and enhancers, not punishers and straighteners.’
    • ‘If your hair is still not straight, even with all these products, or you want a quick fix, try using a hair straightener.’
    • ‘Beauty isn't about pageants and hair straighteners.’