INSTRUMENT noun [ C ] uk/ˈɪnstrəmənt/ us instrument noun [C] (MUSIC) A2 an object that is used for playing music, for example a piano or drum музыкальный инструмент instrument noun [C] (FOR ACHIEVING SOMETHING) someone or something that is used for achieving something средство The Internet is a very powerful instrument of communication. Смотрите такжеwind instrument