Definitions

1. noun

a person who lends something, especially a car, to another person

“She borrowed a car from her neighbor, who was a loaner for the day.”

2. noun

a person who has borrowed something, especially a car, and is temporarily using it

“The loaner had to pay for the gas, but the owner would cover any repairs.”

3. noun

a person who is temporarily using something, especially a car, that belongs to someone else

“The loaner was driving the car while its owner was on vacation.”