visor
n.n. a transparent shield that you wear over your eyes to protect them from the sun or to see through a window. In legal contexts, it refers to a transparent cover over a window in a courtroom to hide the identity of a witness.
n. a transparent shield or plate, typically made of glass or plastic, used to protect the eyes or to provide a clear view through a window. In a legal context, it refers to a transparent panel placed over a witness's face to conceal their identity during testimony.
The witness wore a visor to hide her face from the public.
The judge ordered a visor to be placed over the witness's face to prevent the jury from recognizing her.
Legal protections for vulnerable witnesses often include the use of a visor to ensure their safety while still allowing the court to observe their demeanor under oath.
From Middle English viser, from Anglo-Norman viser and Old French visiere.