buttinsky (plural buttinskys or buttinskies)
- (informal, derisive, Canada, US) One who is prone to butt in, interrupt, or get involved where (s)he is not welcome.
1922, Sinclair Lewis, “20”, in Babbitt:
- "Well, all right then! If you think I'm a buttinsky, then I'll just butt in! […] "
- I wish I had never met that nosy buttinsky!
- (telecommunications) (usually buttinski) 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.