interference in WordNet English dictionary

1. electrical or acoustic activity that can disturb communication
   noise  interference  disturbance 
   
2. any obstruction that impedes or is burdensome
   hindrance  hinderance  hitch  preventive  preventative  encumbrance  incumbrance  interference 
   
3. the act of hindering or obstructing or impeding
   hindrance  hinderance  interference 
   
4. (American football) blocking a player's path with your body
   "he ran interference for the quarterback"
   interference 
   
5. a policy of intervening in the affairs of other countries
   intervention  interference