Australia Estate Lawyer List, page 4

A trust designed to save on estate tax. The trust principal is preserved for the trust maker's grandchildren, with his or her children receiving only income from the trust. Because the children (the middle generation) never legally own the property, it isn't subject to estate tax at their death. See generation-skipping transfer tax.

(1) In the law of wills and estates, a person appointed by the court to take charge of only a designated portion of an estate during probate. For example, a special administrator with particular expertise on art might be appointed to oversee the probate of a wealthy person's art collection, but not the entire estate. (2) A person appointed to be responsible for a deceased person's property for a limited time or during an emergency, such as a challenge to the will or to the qualifications of the named executor. In such cases, the special administrator's duty is to maintain and preserve the estate, not necessarily to take control of the probate process

Under a trust, the situation that occurs when the sole trustee and the sole beneficiary are the same person or institution. Then, there's no longer the separation between the trustee's legal ownership of trust property from the beneficiary's interest. The trust 'merges' and ceases to exist.

All of the property you own when you file for bankruptcy, except for most pensions and educational trusts. The trustee technically takes control of your bankruptcy estate for the duration of your case.