Noun:
1: code, codification a set of rules or principles or laws (especially written ones)
2: code a coding system used for transmitting messages requiring brevity or secrecy
3: code, computer code (computer science) the symbolic arrangement of data or instructions in a computer program or the set of such instructions
Verb:
1: code attach a code to; "Code the pieces with numbers so that you can identify them later"
2: cipher, cypher, encrypt, encipher, encode, code, write in code, inscribe convert ordinary language into code; "We should encode the message for security reasons"