One who makes an assignment; one who transfers property to another. 2. In general the assignor can limit the operation of his assignment, and impose whatever condition he may think proper, but when he makes a general assignment in trust for the use of his creditors, he can impose no condition whatever which will deprive them of any right; nor any condition forbidden by law; as giving preference when the law forbids it. 3. Ad assignor may legally choose his own trustees.