D defs.my
Entry 1 sense Webster, 1913

Tacet

· Ta·cet · IPA /ˈteɪ.sɪt/
01 v. impers. It is silent; -- a direction for a vocal or instrumental part to be silent during a whole movement.
  1. 1.
    It is silent; -- a direction for a vocal or instrumental part to be silent during a whole movement.(Mus.)