The Collaborative International Dictionary of English v.0.48:

Stone \Stone\, v. t. [imp. & p. p. Stoned; p. pr. & vb. n.
   Stoning.] [From Stone, n.: cf. AS. st?nan, Goth.
   stainjan.]
   1. To pelt, beat, or kill with stones.
      [1913 Webster]

            And they stoned Stephen, calling upon God, and
            saying, Lord Jesus, receive my spirit. --Acts vii.
                                                  59.
      [1913 Webster]

   2. To make like stone; to harden.
      [1913 Webster]

            O perjured woman! thou dost stone my heart. --Shak.
      [1913 Webster]

   3. To free from stones; also, to remove the seeds of; as, to
      stone a field; to stone cherries; to stone raisins.
      [1913 Webster]

   4. To wall or face with stones; to line or fortify with
      stones; as, to stone a well; to stone a cellar.
      [1913 Webster]

   5. To rub, scour, or sharpen with a stone.
      [1913 Webster]
      [1913 Webster]

WordNet (r) 3.0 (2006):

stoning
    n 1: the act of pelting with stones; punishment inflicted by
         throwing stones at the victim (even unto death) [syn:
         stoning, lapidation]

Moby Thesaurus II by Grady Ward, 1.0:

54 Moby Thesaurus words for "stoning":
   bane, beheading, blood, bloodletting, bloodshed, braining, burning,
   capital punishment, crucifixion, dealing death, decapitation,
   decollation, defenestration, destruction, destruction of life,
   dispatch, electrocution, euthanasia, execution, extermination,
   flow of blood, fusillade, garrote, gassing, gore, hanging, hemlock,
   immolation, judicial murder, kill, killing, lapidation, martyrdom,
   martyrization, mercy killing, necktie party, poisoning,
   ritual killing, ritual murder, sacrifice, shooting, slaughter,
   slaying, strangling, strangulation, taking of life, the ax,
   the block, the chair, the gallows, the gas chamber, the guillotine,
   the hot seat, the rope



Easton's 1897 Bible Dictionary:

Stoning
   a form of punishment (Lev. 20:2; 24:14; Deut. 13:10; 17:5;
   22:21) prescribed for certain offences. Of Achan (Josh. 7:25),
   Naboth (1 Kings 21), Stephen (Acts 7:59), Paul (Acts 14:19; 2
   Cor. 11:25).