code code /ˈkoʊd/

noun

1. () A set of rules, principles or laws (especially written ones)  ( codification , code )
   a set of rules, principles or laws (especially written ones)
     The spy used a secret code to transmit confidential information.
   The spy used a secret code to transmit confidential information.
   
2. () A coding system used for transmitting messages requiring brevity or secrecy  ( code )
   a coding system used for transmitting messages requiring brevity or secrecy
    Spies often communicate using a secret code to remain undetected.
   Spies often communicate using a secret code to remain undetected.
   
   
3. (computing) the symbolic arrangement of data or instructions in a computer program or the set of such instructions  ( code , computer code )
   (computing) the symbolic arrangement of data or instructions in a computer program or the set of such instructions
   

verb

1. () Attach a code to  ( code )
   attach a code to
    Code the pieces with numbers so that you can identify them later
   Code the pieces with numbers so that you can identify them later
   
2. Convert ordinary language into code  ( code , cypher , encrypt , cipher , encipher , inscribe , write in code )
   convert ordinary language into code
    We should encode the message for security reasons
   We should encode the message for security reasons