Merrill Estate Planning Lawyer, Michigan, page 5

To deliberately prevent someone from inheriting something. This is usually done by a provision in a will stating that someone who would ordinarily inherit property -- a close family member, for example -- should not receive it. In most states, you cannot completely disinherit your spouse; a surviving spouse has the right to claim a portion (usually one-third to one-half) of the deceased spouse's estate. With a few exceptions, however, you can expressly disinherit children.

Any trust that imposes limits or controls over the rights of trust beneficiaries. These trusts include (1) special needs trusts designed to assist people who have special physical, emotional or other requirements, (2) spendthrift trusts designed to prevent a beneficiary from wasting the trust principal; and (3) sprinkling trusts that allow the trustee to decide how to distribute trust income or principal among the beneficiaries.