sign
US /saɪn/
・UK /saɪn/
A1
noun
- Indication that something exists or will happen
- Motion or movement that expresses your thoughts
- A board in the street that conveys information
- Mark or symbol with an understood meaning
verb
- To communicate by using ones hands and gestures
- To write your signature on a document
Examples
They had to communicate through signs and grunts.
He disappeared at the first sign of trouble.