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
Imagine telling someone how to get to your home, but without using the name of your street, or any other street within ten miles. Could you do it? We take street names for granted, but these words are useful for far more, like applying for a job or...
A flashlight emits a steady beam of light. So what’s the flash part of that word about? Also, if you’re a nervous Nellie, you’re skittish and indecisive—both characteristics of an American politician who earned that nickname in the...