Longman Dictionary of Contemporary English homepage

code

2 verb
     
code2 [transitive usually passive]
1 to put a set of numbers, letters, or symbols on something to show what it is or give information about it:
Each path is coded to show the level of difficulty.
2 to put a message into code so that it is secret
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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