bailor

Individual who retains title to property that is being transferred on a temporary basis to the care, custody, and/or control of another. See also Bailee.

One who places control over or possession of personal property in the hands of another, a bailee, for its care, safekeeping, or use, in accordance to the terms of a mutual agreement.

The noun has one meaning:

Meaning #1: the person who delivers personal property (goods or money) in trust to the bailee in a bailment