paper airplane n. in aeronautics and aerospace, a flying machine that is strictly theoretical. Editorial Note: The adjectival form paper, referring to something that exists only in print or writing but not as a physical object, is fairly common. Here it connotes an actual toy-sized folded paper plane, carrying with it derogatory and jocular undertones. (source: Double-Tongued Dictionary)
Further reading
How do you transform ancient Chinese script for use in the modern age? English uses a keyboard with just 26 letters, but the first Chinese typewriter looked like a small table under a huge disk with more than 4,000 characters. A new book chronicles...
Novelist Charles Dickens and the musician Prince were very different types of artists, but they also had a lot in common. A new book chronicling their extraordinary careers becomes a larger meditation on perfectionism and creativity itself. Plus...