buttinsky
/bʌˈtɪnski/noun
RareNot in standard dictionaries
1
One who is prone to butt in, interrupt, or get involved where they are not welcome; a busybody.
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.
Thesaurus
#derogatory#informal