sign

noun [C] (SHOWING)

/saɪn/

Definition

B1 something showing that something else exists or might happen or exist in the future: His inability to handle the situation is a sure sign of weakness. [+ that] The fact that he's eating more is a sign that he's feeling better. I've searched for my hat, but there's no sign of it anywhere (= I can't find it). There was no sign of life in the building (= there seemed to be no one in it). Billy's work at school has shown signs of improvement this year. There is every sign that/All the signs are that the worst is over. → See also signal nounShowing and demonstrating

(Definition of sign noun (SHOWING) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)