| Word | black box |
|---|---|
| Description | an automatic apparatus, the internal operations of which are mysterious to non-experts. Black does not refer to the colour of the device but to the arcane nature of its functions. Originally Royal Air Force slang for a navigational instrument in an aircraft, the phrase is now used in aviation specifically to refer to the flight recorder. an automatic apparatus, the internal operations of which are mysterious to non-experts. Black does not refer to the colour |
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