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1. The rising of a body of water and its overflowing onto normally dry land
   "plains fertilized by annual inundations";
   - flood, deluge, alluvion
    
2. An overwhelming number or amount
   - flood, deluge, torrent

Derived forms: inundations

Type of: batch, bunch [informal], deal, flock, geological phenomenon, good deal, great deal, hatful, heap, lot, mass, mess, mickle [archaic], mint, mountain, muckle, passel [US], peck, pile [informal], plenty, pot, quite a little, raft, sight, slew, spate, stack, tidy sum, wad

Encyclopedia: Inundation, Gibraltar