overcloud

from WordNet (r) 3.0 (2006)

overcloud
    v 1: become covered with clouds; "The sky clouded over" [syn:
         {overcloud}, {cloud over}, {cloud up}]
    2: make obscure or unclear; "The distinction was obscured" [syn:
       {obscure}, {bedim}, {overcloud}]

from The Collaborative International Dictionary of English v.0.48

Overcloud \O`ver*cloud"\, v. t.
   To cover or overspread with clouds; to becloud; to overcast.
   [1913 Webster]

[email protected]