black box
noun/ˌblæk ˈbɒks/
/ˌblæk ˈbɑːks/
- (also flight recorder)a small machine in a plane that records all the details of each flight and is useful for finding out the cause of an accidentTopics Transport by airc2
Want to learn more?
Find out which words work together and produce more natural sounding English with the Oxford Collocations Dictionary app.
- [usually singular] (informal) a complicated piece of equipment, usually electronic, that you know produces particular results, but that you do not completely understand
Check pronunciation:
black box