black box

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black box

  • /ˈblæk.bɒx/

Where it comes from

* Since c. 1945 in both main senses (that is, event recorders and objects with unknown innards), which are historically related to each other; for details, see black box § History and flight recorder § Terminology.

* (a type of theater): Such theaters are often painted black.

noun black boxes · blackbox

  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

    Similar: event recorder, opaque box, trip recorder

  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”)

    Similar: football

verb black boxes · black boxing · black boxed · blackbox

  1. transitive To focus on the inputs and outputs without worrying about the internal complexity.

Translations

Every language

noun recorders in an aircraft

Españolcaja negra
한국어블랙박스 beullaekbakseu
日本語ブラックボックス burakku bokkusu
中文黑箱 hēixiāng, 黑匣子 hēixiázi, 黑盒子 hēihézi
हिन्दीब्लैक बॉक्स blaik bŏks
Portuguêscaixa-preta, caixa-negra
Françaisboîte noire
DeutschFlugschreiber, Blackbox
Italianoscatola nera, registratore di volo
Românăcutie neagră, înregistrător de zbor
Русскийчёрный я́щик čórnyj jáščik
Tiếng Việthộp đen
العربيةصُنْدُوق أَسْوَد ṣundūq ʔaswad
עבריתקופסה שחורה kufsá sh'khorá

noun theoretical construct or device

Españolcaja negra
한국어블랙박스 beullaekbakseu
日本語ブラックボックス burakku bokkusu
中文黑箱 hēixiāng, 黑盒 hēihé
Portuguêscaixa-preta, caixa-negra
Françaisboîte noire
DeutschBlackbox
Italianoscatola nera
Românăcutie neagră
Русскийчёрный я́щик čórnyj jáščik
العربيةصُنْدُوق أَسْوَد ṣundūq ʔaswad
עבריתקופסה שחורה kufsá sh'khorá

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MLA

"black box." Wiktionary, via Micwyn, micwyn.com/word/black%20box. Accessed 6 Nov. 2026.

APA

black box. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/black%20box

Chicago

"black box." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/black%20box.

BibTeX
@misc{black_box_2026,
  title = {black box},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/black%20box},
  urldate = {2026-11-06}
}