1) One who wills property 2) Rube Goldberg type 3) Testate 4) Testator 
• (n.) One who devises, or gives real estate by will; a testator; -- correlative to devisee.
De·vis'or noun (Law) One who devises, or gives real estate by will; a testator; -- correlative to devisee . 
A testator; one, who devises his real estate.
Someone who leaves real estate by will. (See also: testator)
[n] - someone who devises real property in a will
noun someone who devises real property in a will
A testator who leaves real estate.
a person who makes a devise.