Legal Definition
A co-trustee is an individual who holds a legal title to a trust, often alongside the trustee, or in conjunction with other trustees, where they share the responsibility for managing or administering the assets held within that trust.
Plain-English Translation
Imagine a person who has a shared job of managing something important, like a house or money, under a trust. They are one of the people responsible for making sure the rules of the trust are followed, alongside other managers.