The Collaborative International Dictionary of English v.0.48:

Flooding \Flood"ing\, n.
   The filling or covering with water or other fluid; overflow;
   inundation; the filling anything to excess.
   [1913 Webster]

   2. (Med.) An abnormal or excessive discharge of blood from
      the uterus. --Dunglison.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Flood \Flood\, v. t. [imp. & p. p. Flooded; p. pr. & vb. n.
   Flooding.]
   1. To overflow; to inundate; to deluge; as, the swollen river
      flooded the valley.
      [1913 Webster]

   2. To cause or permit to be inundated; to fill or cover with
      water or other fluid; as, to flood arable land for
      irrigation; to fill to excess or to its full capacity; as,
      to flood a country with a depreciated currency.
      [1913 Webster]

WordNet (r) 3.0 (2006):

flooding
    n 1: a technique used in behavior therapy; client is flooded
         with experiences of a particular kind until becoming either
         averse to them or numbed to them [syn: implosion therapy,
         flooding]