The Collaborative International Dictionary of English v.0.48:

Stunt \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.
   [1913 Webster]

         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.
   [1913 Webster]

WordNet (r) 3.0 (2006):

stunting
    n 1: the performance of stunts while in flight in an aircraft
         [syn: acrobatics, aerobatics, stunting, stunt
         flying]