loom in WordNet English dictionary

1. hang over, as of something threatening, dark, or menacing
   "The terrible vision brooded over her all day long"
   brood  hover  loom  bulk large 
   
2. appear very large or occupy a commanding position
   "The huge sculpture predominates over the fountain"; "Large shadows loomed on the canyon wall"
   loom  tower  predominate  hulk 
   
3. weave on a loom
   "materials loomed in Egypt"
   loom 
   
4. come into view indistinctly, often threateningly
   "Another air plane loomed into the sky"
   loom 
   

1. a textile machine for weaving yarn into a textile
   loom