Testamentary Trust
A trust that is created by your will and only comes into existence after you die. Unlike a living trust, a testamentary trust does go through probate because it is part of your will.
Legal Definition
A trust established pursuant to the terms of a decedent's will, which takes effect upon the probate of the will and the transfer of assets from the estate to the trust.
Practical Example
John's will states that when he dies, $500,000 should go into a trust for his teenage children, to be managed by his brother until each child turns 25. This trust doesn't exist until John dies and his will is probated.