flightcipher
nounUK /ˈflaɪtˌsaɪfə/
US /ˈflaɪtˌsaɪfər/
A secret code that keeps messages safe while they travel through the air.
The pilot used a flightcipher to send a hidden message to the tower.
RELATED WORDS
OTHER MEANINGS
2. A puzzle about airplanes that you solve by cracking a code.
The magazine printed a flightcipher for young plane fans.
3. A special way of writing that only pilots and flight crews can read.
The crew wrote the landing time in a flightcipher.
4. A coded signal sent between flying machines.
The drone answered with a quick flightcipher.