will 1 
(wĭl)
(wĭl)n.
1. The mental faculty by which one deliberately chooses or decides upon a course of action: championed freedom of will against a doctrine of predetermination.
2.
a. Diligent purposefulness; determination: an athlete with the will to win.
b. Self-control; self-discipline: lacked the will to overcome the addiction.
3. A desire, purpose, or determination, especially of one in authority: It is the sovereign's will that the prisoner be spared.
4. Deliberate intention or wish: Let it be known that I took this course of action against my will.
5. Free discretion; inclination or pleasure: wandered about, guided only by will.
6. Bearing or attitude toward others; disposition: full of good will.
7.
a. A legal declaration of how a person wishes his or her possessions to be disposed of after death.
b. A legally executed document containing this declaration.
v. willed, will·ing, wills
v.tr.
1.
a. To decide on or intend: He can finish the race if he wills it.
b. To yearn for; desire: "She makes you will your own destruction" (George Bernard Shaw).
c. To decree, dictate, or order: believed that the outcome was willed by the gods.
2. To induce or try to induce by sheer force of will: We willed the sun to come out.
3.
a. To grant in a legal will; bequeath: willed his fortune to charity.
b. To order to direct in a legal will: She willed that her money be given to charity.
v.intr.
Idiom: 1. To exercise the will.
2. To make a choice; choose: Do as you will.
at will
Just as or when one wishes.
[Middle English, from Old English willa; see wel-1 in the Appendix of Indo-European roots.]