Definitions
1.nounA disadvantage of something, especially when contrasted with its advantages (pros)."pros and cons"
2.noun(abbreviation) conservative"own the cons"
3.nounA convicted criminal, a convict.
4.nounA fraud; something carried out with the intention of deceiving, usually for personal, often illegal, gain.
5.nounAn organized gathering such as a convention, conference or congress.
6.nounThe conversion of part of a building."We're getting a loft con done next year."