Learner's definition of INTERFERENCE
1 : involvement in the activities and concerns of other people when your involvement is not wanted : the act of interfering
We had to put up with loud noise and constant interference from the neighbors.
interference in the affairs of another nation
trying to avoid governmental interference
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 interferenceAmerican football
: to run in front of the player who is carrying the ball in order to block opponents — often used figuratively