n.a clef that puts middle C on the fourth line of the staff; used for writing music for bassoons or cellos or tenor horns
英汉双解大词典
tenor clef
1.
N（名词）
the clef that establishes middle C as being on the fourth line of the staff, used for the writing of music for the bassoon, cello, or tenor trombone 中音谱号 → see also C clef