interference

1 ENTRIES FOUND:
interference /ˌɪntɚˈfirəns/ noun
interference
/ˌɪntɚˈfirəns/
noun
Britannica Dictionary definition of INTERFERENCE
[noncount]
1 
: involvement in the activities and concerns of other people when your involvement is not wanted : the act of interfering
2 
: additional signals that weaken or block the main signal in a radio or television broadcast
3 
sports : the act of illegally hitting or getting in the way of an opponent

run interference

American football
: to run in front of the player who is carrying the ball in order to block opponents — often used figuratively