an act of interfering
I resent his interference in my work.
Industrial relations should be free from state interference.
unwanted noise on the radio, television, or on the telephone, or faults in the television picture
3 especially American EnglishDS
the act of blocking or touching another player in a sports game, for example by standing in front of them or holding on to them, when you are not supposed to [= obstruction British English]
4 American English
to protect a player who has the ball in American football by blocking players from the opposing team
to help someone to achieve something by dealing with people or problems that might cause them trouble