Related Clues:

• Something cracked
• Cat, dog, boy or fish, e.g.
• Programmer's creation
• It's broken after some thought
• Spy-school subject
• UPC part
• Cracker's target
• Verb go-with
• Word that can be pluralized
• It may be cracked by a spy
• It may be declined
• Verb's partner
• Verb counterpart
• Programmer's concern
• It can't be understood until it's broken