Definition of clotheslines:
(n) :
A rope or cord tied up outdoors to hang clothes on so they can dry.
(n) :
A structure with multiple cords for the same purpose, such as a Hills hoist.
(n) :
(Canada, US, informal) The act of knocking a person over by striking his or her upper body or neck with one's arm, as if he or she had run into a low clothesline.
(v) :
(Canada, US, informal, transitive) To knock (a person) over by striking them across the neck or upper body with an outstretched arm, mimicking the motion of running into a low clothesline.