Meaning of “link” - Learner’s Dictionary

link

noun [ C ] us uk /lɪŋk/
Extra Examples
For years, studies have shown the link between smoking and cancer.Our school has close links with a school in China.There is almost certainly a link between the use of sunbeds and skin cancer.He has direct links to the terrorist network.She cut off all links with her family.
CONNECTION

B2 a connection between two people, things, or ideas:

There's a direct link between diet and heart disease.
Their links with Britain are still strong.
CHAIN

one ring of a chain

INTERNET also hyperlink

B1 a connection between documents or areas on the Internet:

Click on this link to visit our online bookstore.

(Definition of “link noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)