[{"Bold_text": "noun", "List Items": ["a full, rich outpouring of melodious sound.", "the compass of a voice or instrument.", "a fixed standard of pitch.", "either of two principal timbres or stops of a pipe organ, one of full, majestic toneopen diapasonand the other of strong, flutelike tonestopped diapason.", "any of several other organ stops.", "a tuning fork."]}]