Source : Webster's Revised Unabridged Dictionary (1913)

Heal \Heal\, v. t. [See {Hele}.]
   To cover, as a roof, with tiles, slate, lead, or the like.
   [Obs.]

Heal \Heal\, v. t. [imp. & p. p. {Healed}; p. pr. & vb. n.
   {Healing}.] [OE. helen, h[ae]len, AS. h[=ae]lan, fr. h[=a]l
   hale, sound, whole; akin to OS. h[=e]lian, D. heelen, G.
   heilen, Goth. hailjan. See {Whole}.]
   1. To make hale, sound, or whole; to cure of a disease,
      wound, or other derangement; to restore to soundness or
      health.

            Speak the word only, and my servant shall be healed.
                                                  --Matt. viii.
                                                  8.

   2. To remove or subdue; to cause to pass away; to cure; --
      said of a disease or a wound.

            I will heal their backsliding.        --Hos. xiv. 4.

   3. To restore to original purity or integrity.

            Thus saith the Lord, I have healed these waters. --2
                                                  Kings ii. 21.

   4. To reconcile, as a breach or difference; to make whole; to
      free from guilt; as, to heal dissensions.

Heal \Heal\, v. i.
   To grow sound; to return to a sound state; as, the limb
   heals, or the wound heals; -- sometimes with up or over; as,
   it will heal up, or over.

         Those wounds heal ill that men do give themselves.
                                                  --Shak.

Heal \Heal\, n. [AS. h?lu, h?l. See {Heal}, v. t.]
   Health. [Obs.] --Chaucer.

Source : WordNet®

heal
     v 1: heal or recover; "My broken leg is mending" [syn: {mend}]
     2: get healthy again; "The wound is healing slowly"
     3: provide a cure for, make healthy again; "The treatment cured
        the boy's acne"; "The quack pretended to heal patients but
        never managed to" [syn: {bring around}, {cure}]