con
     n 1: an argument opposed to a proposal [ant: {pro}]
     2: a person serving a sentence in a jail or prison [syn: {convict},
         {inmate}, {jailbird}, {gaolbird}]
     3: a swindle in which you cheat at gambling or persuade a
        person to buy worthless property [syn: {bunco}, {bunco
        game}, {bunko}, {bunko game}, {confidence trick}, {confidence
        game}, {con game}, {gyp}, {hustle}, {sting}, {flimflam}]
     adv : on the negative side; "much was written pro and con" [syn: {in
           opposition}] [ant: {pro}]
     v 1: deprive of by deceit; "He swindled me out of my
          inheritance"; "She defrauded the customers who trusted
          her"; "the cashier gypped me when he gave me too little
          change" [syn: {victimize}, {swindle}, {rook}, {goldbrick},
           {nobble}, {diddle}, {bunco}, {defraud}, {scam}, {mulct},
           {gyp}]
     2: commit to memory; learn by heart; "Have you memorized your
        lines for the play yet?" [syn: {memorize}, {memorise}, {learn}]
     [also: {conning}, {conned}]
Source: WordNet® 2.0

con n. [from SF fandom] A science-fiction convention. Not used of other
   sorts of conventions, such as professional meetings. This term, unlike
   many others imported from SF-fan slang, is widely recognized even by
   hackers who aren't {fan}s. "We'd been corresponding on the net for
   months, then we met face-to-face at a con."


Source: The Jargon File