will¹ /wɪl/USA pronunciation   auxiliary v. and v., pres. will;
 past would. 
auxiliary, modal verb. This word is used before the root form of the next verb

1. to indicate that the action of that verb is going to take place in the future:I will be there tomorrow.
2. to express willingness:Nobody will help us.
3. to express a command:You will report to the principal at once.
4. to mean "may be expected or supposed to'':You will not have forgotten him.
5. to express probability or to show what is likely:They will be asleep by this time, don't you think?
6. to express customary action:She will write for hours at a time. Boys will be boys.
7. to express capability:This couch will seat four.

v. [~ + object]

8. to wish;
   like:Take what you will.

will² /wɪl/USA pronunciation   n. 

1. the ability to do actions that one is conscious of and that one wishes to do deliberately:[uncountable]the freedom of the will.
2. the power of choosing or deciding:[countable]a strong will.
3. wish or desire:[countable* usually singular]He went against his mother's will.
4. purpose or determination:[uncountable]the will to succeed.
5. feelings, emotions, or regard toward another:[uncountable]She still harbored a lot of ill will toward her old boss.
6. Law[countable] a legal document stating what will happen to one's possessions or property after one's death.

v. 

7. to decide upon or bring about by an act of the will:[~ + object + to + verb]willed himself to get out of bed.
8. Lawto give (one's possessions or property) to (someone) after one's death;
   bequeath: [~ + object + to + object]She willed the silver tea set to her daughter.[~ + object + object]She willed her the silver tea set.

Idioms

9. Idioms at will, as one desires;
   whenever one chooses:The kids were free to wander at will.

will¹  (wil),USA pronunciation auxiliary v.  and v., pres. sing. 1st pers. will, 2nd will  or (Archaic) wilt, 3rd will, pres. pl. will*  past sing. 1st pers. would, 2nd would  or (Archaic) wouldst, 3rd would, past pl. would;
 past part.  (Obs.) wold  or would;
 imperative, infinitive, and pres. participle lacking. 
auxiliary verb. 

1. am (is, are, etc.) about or going to:I will be there tomorrow. She will see you at dinner.
2. am (is, are, etc.) disposed or willing to:People will do right.
3. am (is, are, etc.) expected or required to:You will report to the principal at once.
4. may be expected or supposed to:You will not have forgotten him. This will be right.
5. am (is, are, etc.) determined or sure to (used emphatically):You would do it. People will talk.
6. am (is, are, etc.) accustomed to, or do usually or often:You will often see her sitting there. He would write for hours at a time.
7. am (is, are, etc.) habitually disposed or inclined to:Boys will be boys. After dinner they would read aloud.
8. am (is, are, etc.) capable of;
   can:This tree will live without water for three months.
9. am (is, are, etc.) going to:I will bid you "Good night.''

v.t., v.i. 

10. to wish;
    desire;
    like:Go where you will. Ask, if you will, who the owner is.

See shall. 

will²  (wil),USA pronunciation n., v., willed, will•ing. 
n. 

1. the faculty of conscious and especially of deliberate action;
   the power of control the mind has over its own actions:the freedom of the will.
2. power of choosing one's own actions:to have a strong or a weak will.
3. the act or process of using or asserting one's choice;
   volition:My hands are obedient to my will.
4. wish or desire:to submit against one's will.
5. purpose or determination, often hearty or stubborn determination;
   willfulness:to have the will to succeed.
6. the wish or purpose as carried out, or to be carried out:to work one's will.
7. disposition, whether good or ill, toward another.
8. Law
   • a legal declaration of a person's wishes as to the disposition of his or her property or estate after death, usually written and signed by the testator and attested by witnesses.
   • the document containing such a declaration.
9. at will:
   • at one's discretion or pleasure;
     as one desires:to wander at will through the countryside.
   • at one's disposal or command.

v.t. 

10. to decide, bring about, or attempt to effect or bring about by an act of the will:He can walk if he wills it.
11. to purpose, determine on, or elect, by an act of will:If he wills success, he can find it.
12. Lawto give or dispose of (property) by a will or testament;
    bequeath or devise.
13. to influence by exerting will power:She was willed to walk the tightrope by the hypnotist.

v.i. 

14. to exercise the will:To will is not enough, one must do.
15. to decide or determine:Others debate, but the king wills.

will′er, n. 

• 3.See corresponding entry in Unabridged choice.
• 4.See corresponding entry in Unabridged pleasure, disposition, inclination.
• 5.See corresponding entry in Unabridged resolution, decision. Will, volition refer to conscious choice as to action or thought. Will denotes fixed and persistent intent or purpose:Where there's a will there's a way.Volition is the power of forming an intention or the incentive for using the will:to exercise one's volition in making a decision.
• 10.See corresponding entry in Unabridged determine.
• 12.See corresponding entry in Unabridged leave.

Will  (wil),USA pronunciation n. 

1. a male given name, form of William.