英语 (same as 業) in ancient China, big piece of board (plank) on a music rack with the carving of the shape of saw's teeth; used to hang clock (musical stone, drum, etc.), instruction
【字彙】魚怯切,音業。築牆版。
又筍虡上橫版,鋸齒刻之。指其縣鐘鼓者,則名簨。指其橫版之飾,則名㸣。【正字通】經史俱作業。俗加片作㸣,非。