a secret messageThe codebreakers cracked the cipher.
They used elaborate secret codes.
coded message, ,
a person or thing of no importanceThey were little more than ciphers who faithfully carried out their master's commands.
The artist uses the oak tree as a symbol of strength.
Deduct the second figure from the first.
Chinese characters inscribed on a plaque
Her telephone number differs from mine by one digit.
None of the doors have numbers on them.
a flat, square wristwatch with roman numerals
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in the sense of character
a single letter, numeral, or symbol used in writing or printingChinese characters inscribed on a plaque
in the sense of device
a design or emblem
cipher 的词库—— 柯林斯 英语词库
Life on the edge
The desire to push the boundaries has been a motivator in many a daring expedition, testing the human spirit and physical abilities to the utmost. Indulge your adventurous spirit by exploring some associated ‘extreme’ vocabulary. Will you have the survival skills to master our quiz?