1. [n]  a difficult or unusual or dangerous feat; usually done to gain attention
2. [n]  a creature (especially a whale) that has been prevented from attaining full growth
3. [v]  perform a stunt or stunts
4. [v]  check the growth or development of; "You will stunt your growth by building all these muscles"

Stunt
Stunt

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1. \Stunt\, n. [Cf. {Stint} a task.]
   A feat hard to perform; an act which is striking for the
   skill, strength, or the like, required to do it; a feat.
   [Colloq.]
         An extraordinary man does three or four different
         ``stunts'' with remarkable dexterity.    --The Bookman.
         He does not try to do stunts; and, above all, he does
         not care to go in swimming.              --L. Hutton.
   

2. \Stunt\, v. t. [imp. & p. p. {Stunted}; p. pr. & vb. n.
   {Stunting}.] [See {Stint}.]
   To hinder from growing to the natural size; to prevent the
   growth of; to stint, to dwarf; as, to stunt a child; to stunt
   a plant.
         When, by a cold penury, I blast the abilities of a
         nation, and stunt the growth of its active energies,
         the ill or may do is beyond all calculation. --Burke.
   

3. \Stunt\, n.
   1. A check in growth; also, that which has been checked in
      growth; a stunted animal or thing.
   2. Specifically: A whale two years old, which, having been
      weaned, is lean, and yields but little blubber.