The red light is a warning sign for stop.
Mother winked at Laura as a sign for her to keep silent.
Father winked at Dick as a sign for him to keep still.
That has to be a worrying sign for England.
It was impossible for us to sign another one.
Lang translated the street sign for Lang Guoren.
PHRASAL VERB 签收 If you sign for something, you officially state that you have received it, by signing a form or book.
V P n
When the postal clerk delivers your order, check the carton before signing for it.