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English definition of “sign”

sign

verb uk   /saɪn/ us  

sign verb (WRITE)

B1 [I or T] to write your name, usually on a written or printed document, to show that you agree with its contents or have written or created it yourself: to sign a letter/cheque/contract/lease/agreement Sign here, please. He signed his name at the end of the letter. [+ obj + noun ] He signed himself 'Mark Taylor'. She said the painting was by Picasso, but it wasn't signed. [T] in sport, to make a legal written agreement to employ a player: The club has just signed a new player.

sign verb (BODY MOVEMENT)

[T or I] to give an order or information, or make a request, using hand and body movements: [+ to infinitive] He signed for/to the waiter to bring him another drink. [+ that] He signed to the waiter that he wanted another drink. [I or T] to use sign language (= language used by people who cannot hear or talk)

sign

noun [C] uk   /saɪn/ us  

sign noun [C] (NOTICE)

A2 a notice giving information, directions, a warning, etc.: a road sign a shop sign

sign noun [C] (BODY MOVEMENT)

B1 a movement of the body that gives information or an instruction: She pointed to her watch as a sign that it was getting late and she wanted to leave. She made/gave a sign to her husband to stop talking. The priest made the sign of the cross (= made the shape of a cross by moving his hand between four points on his chest) when he entered the church.
See also

sign noun [C] (SHOWING)

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

sign noun [C] (MARK)

B2 a written or printed mark that has a standard meaning: + and - are mathematical signs. £ is the sign for the British pound.
(Definition of sign from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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