(theater) An actor temporarily employed for a specific role, often in a touring company.
An intermediary who buys and sells merchandise, particularly in the apparel industry, buying excess merchandise from brand owners and manufacturers and selling to retailers at discounted prices, or a market maker on the stock exchange.
(professional wrestling slang) A performer whose primary role is to lose to established talent.
(slang) A thing (often used in a vague way to refer to something the name of which one cannot recall).