What is the meaning of goldbrick?

noun

• A soldier who performs his duties without proper care or effort.
• An idle worthless person.
  • synonyms: goof-off, ne'er-do-well, good-for-nothing, no-account, good-for-naught
• A brick-shaped block that looks like gold but is not.
• Anything that is supposed to be valuable but turns out to be worthless.

verb

• Deprive of by deceit.
  • usage: "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"
  • synonyms: victimize, swindle, rook, nobble, diddle, bunco, defraud, scam, mulct, gyp, gip, hornswoggle, short-change, con
• Avoid (one's assigned duties. )
  • usage: "The derelict soldier shirked his duties"
  • synonyms: fiddle, shirk, shrink from