Phrase guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
No pronunciation record was provided for this word.
noun
A mechanical aerodynamic wedge that prevents the ventral airstair of an aircraft from being lowered during flight.
Definition source: English Wiktionary via Wiktextract
Topics: aeronautics, aerospace, aviation, business, engineering, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
After Dan Cooper, the false name used by an unidentified hijacker who used the rear stairway to exit a Boeing 727 in flight and escape using a parachute.
