Bedeutung von “sign” — Learner’s Dictionary

sign

verb [ I, T ] us uk /saɪn/
Please sign and return the insurance documents enclosed.Only managers are authorized to sign expense forms.They are in no hurry to sign a contract.The form cannot be signed by anyone other than the child's parent.He was pressurized into signing the agreement.

B1 to write your name on something to show that you wrote/painted, etc it or to show that you agree to it:

He signs his letters 'Prof. James D. Nelson'.
to sign / a contract/treaty

(Definition von “sign verb” aus dem Cambridge Learner's Dictionary © Cambridge University Press)