Definition of interference noun from the Oxford Advanced Learner's Dictionary

interference

noun
ˌɪntəˈfɪərəns
 
; ˌɪntərˈfɪrəns
 
[uncountable]
 
1 interference (in something) the act of interferingThey resent foreign interference in the internal affairs of their country.political interference in legal proceedings2 interruption of a radio signal by another signal on a similar wavelength, causing extra noise that is not wanted
Idioms

run interference

(North American English)1 (in American football) to clear the way for the player with the ball by blocking players from the opposing team2 (informal) to help somebody by dealing with problems for them so that they do not need to deal with themYou have plenty of friends that can always run interference for you.