Buttinsky

Noun

1. One who is prone to butt in, interrupt, or get involved where they are not welcome; a busybody. .mw-parser-output .defdate{font-size:smaller}

   "I wish I had never met that nosy buttinsky!"

2. A robust portable one-piece telephone instrument with clips, used by technicians and lines staff for testing telephone circuits or making a temporary connection to a telephone line.