Word.ws English Dictionary

black boxes

black boxes is the plural of black box.

black boxes is the third-person singular simple present indicative of black box.

Meaning of black box

Noun

black box (plural black boxes)

  1. (informal) A flight recorder; the brightly colored cockpit voice recorders and flight data recorders in an aircraft designed to aid in determining the cause of an accident.
    • scrutinizing all utterances recorded by the black box
  2. (broadly) Any similar device on motor vehicles, such as rail event recorders and ship trip recorders.
    • the pilothouse's analogue of an airliner's black box
  3. A theoretical construct or device with known input and output characteristics but unknown method of operation.
    • The authentication method and its details can be treated as a black box for purposes of this security architecture overview.
  4. A device used in phreaking that prevents the calling party from being billed for the call placed.
  5. (attributive) A type of theater characterized by a lack of decoration or complex mechanisms.
  6. Synonym of football (“the leather briefcase containing classified nuclear war plans which is always near the US President”)
    Synonyms:
    football

See all 7 meanings of black box

Questions about black boxes

What is black boxes the plural of?
Black boxes is the plural of black box.

Words near black boxes in the dictionary

  1. black box
  2. black box insurance
  3. black box warning
  4. black box warnings
  5. black boxed
  6. black boxes
  7. black boxing
  8. black boy
  9. black boys
  10. black brane
  11. black branes

Source and license

Adapted from Wiktionary: black boxes (page history and authors); black box (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “black boxes.” Word.ws, https://word.ws/black_boxes. Based on Wiktionary, CC BY-SA 4.0.