noun
: one or more sharps or flats placed immediately after the clef to designate the musical scale to be understood on the staff that in turn establishes the tonality
noun
: one or more sharps or flats placed immediately after the clef to designate the musical scale to be understood on the staff that in turn establishes the tonality
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012