No – it has nothing to do with engineering. In this context, social engineering is the act of using established trust to gain information about someone in order to exploit their technology in a manner that would harm them.
A good example of this in a real estate transaction is wire fraud. You're currently in contract to buy a house and you receive an email (seemingly) from your Realtor that instructs you to wire $10,000 to the title company in order for the transaction to proceed. Trusting your agent, you call your bank and have the transfer setup to the account indicated in the email you have received. You call your agent to tell them you have transferred the mon...