What is 5. (Law) The exercise of the power of designating (under a "power of appointment") a person to enjoy an estate or other specific property; also, the instrument by which the designation is made called?

appointment — 5. (Law) The exercise of the power of designating (under a "power of appointment") a person to enjoy an estate or other specific property; also, the instrument by which the designation is made. (Webster's 1913.)

Sources