Admonition to a cinema gabber, 3 letters
Command in a library, 3 letters
Comment on a library volume?: Var., 3 letters
Disruptive theater patron's comeuppance: Var., 3 letters
Librarian's admonition, 3 letters
Librarian's warning, 3 letters
Library sound: Var., 3 letters
Secure Internet connection protocol letters, 3 letters
Secure online protocol, 3 letters
Sound barrier?: Var., 3 letters
Curving one way, then the other, 7 letters
Like some curvy roads, 7 letters
Pot holder, perhaps, 11 letters