Definition of "whirlybirds" [whirlybirds]

• Plural form of whirlybird. (noun)

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• "Although many breeds of helicopter have become quite safe, there is still a lingering kind of madness regarding these "whirlybirds": the drive to see how insanely huge we can make them. via)"
• "But throttling up whirlybirds presents substantial cost and engineering challenges."
• "How many squirrels do you know that built rocket ships and flew them to the moon, built whirlybirds that run on coconut milk, or have a secret army of robots in their toolsheds?"