jobber

Short definition from Wiktionary

Noun

1. 1
   One who works by the job (i.e. paid per individual piece of work) and/or recruits other people for such work.
2. 2
   An actor temporarily employed for a specific role, often in a touring company.
3. 3
   A promoter or broker of stocks for investment.
4. 4
   An intermediary who buys and sells merchandise.
5. 5
   An intermediary who buys and sells merchandise: A type of intermediary in the apparel industry, as well as others, who buys excess merchandise from brand owners and manufacturers, and sells to retailers at prices that are 20-70% below wholesale.
6. 6
   An intermediary who buys and sells merchandise: A market maker on the stock exchange; a stockjobber.
7. 7
   A performer whose primary role is to lose to established talent.
8. 8
   A thing (often used in a vague way to refer to something the name of which one cannot recall).