What is Link ?
Link is (noun) 1. a thing which connects two things or places The Channel Tunnel provides a fast rail link between England and France. 2. one of the rings in a chain A chain with solid gold links. (verb) to join together They linked arms and walked down the street. His salary is linked to the cost of living. All the rooms are linked to the main switchboard. Eurostar links London and Paris or Brussels. Synonym connect
source: Easier English, Student Dictionary Upper Intermediate Level