Definition of Blue Orchid in English:

Blue Orchid

noun

Australian
  • A member of the Royal Australian Air Force during the Second World War.

    ‘I was so impressed with the Blue Orchids that I put my age up and joined’
    • ‘As in the other two Services, RAAF discipline was strict and the Blue Orchids learnt weapons handling and drill to the same high standard.’
    • ‘We had not seen their distinctive dark blue uniforms before and were delighted to learn that the army and other unsympathetic characters called them Blue Orchids.’
    • ‘From 1940 to 1946, the town hosted a huge complement of Blue Orchids—the name bestowed on the dashing young men in RAAF uniform.’
    • ‘The air force only accepted men with a university education, and they were so precious we called them the Blue Orchids.’
    • ‘Just what we need—more Blue Orchids believing they are special forces.’
    • ‘I fish the sea of my memory—Blue Orchids!—that's what they called the men in the air force.’
    • ‘He had to pass close to the army cadets and was several times teased by people calling him a Blue Orchid.’
    • ‘I'm just explaining 'wait-a-while' to the Blue Orchids and matelots.’
    • ‘A special exhibition—'Blue Orchids: The RAAF Uniform 1921–2001'—opens on 28 August and is open during museum hours.’
    • ‘At age 19, he was accepted into the Royal Australian Air Force as a Blue Orchid.’

Origin

1940s: from the colour of the uniform and with reference to its supposed smartness.