Given to someone on a temporary basis. We've got a backhoe on loan from Mike's construction company to help dig a ditch through the field at the back of the house. We're delighted to announce that we will have The Mona Lisa on loan from the Louvre.
on loan (from someone or something)
[of possession] temporarily granted by someone or some group. This lovely painting is on loan from the Kimble Museum for the rest of the year.