banjo

noun
  1. A stringed musical instrument with a thin membrane stretched over a circular frame or resonator, typically with a fretted neck and played by plucking or strumming the strings. noun
    He played a lively tune on his banjo at the folk festival.
    The sound of the banjo filled the room with a cheerful melody.
  2. A type of spanner or wrench with a circular opening, used for tightening or loosening nuts and bolts. noun
    He used a banjo spanner to fix the leak in the pipe.
    The mechanic reached for the banjo wrench to adjust the engine components.