Legal Definition
A lender is an entity (individual or institution) that provides credit to a borrower, typically in the form of a loan, and expects repayment of the principal plus interest, often under specific legal terms.
Plain-English Translation
Imagine a bank or a company that gives you money to borrow. They are the 'lender' because they lend you funds for a specific purpose, like buying a house or starting a business, and they expect you to pay them back with interest.