informal
Definition of gold brick
noun
a thing that looks valuable but is in fact worthless. (also goldbrick or goldbricker) a con man. a lazy person: [as modifier]:hardworking Amos and goldbrick Andy
verb
(usually goldbrick) [no object] invent excuses to avoid a task; shirk:he wasn’t goldbricking; he was really sick [with object] swindle (someone).