What is Link?

Link definition and meaning on Dictionary terms:
one of the rings or separate pieces of which a chain is composed.
anything serving to connect one part or thing with another; a bond or tie: The locket was a link with the past.
a unit in a communications system, as a radio relay station or a television booster station.
any of a series of sausages in a chain.

a cuff link.
a ring, loop, or the like: a link of hair.
Computers. an object, as text or graphics, linked through hypertext to a document, another object, etc.
Surveying, Civil Engineering. (in a surveyor’s chain) a unit of length equal to 7.92 inches (20.12 centimeters). one of 100 rods or loops of equal length forming a surveyor’s or engineer’s chain.

Chemistry. bond1(def 15).
Machinery. a rigid, movable piece or rod, connected with other parts by means of pivots or the like, for the purpose of transmitting motion.

verb (used with or without object)
to join by or as if by a link or links; connect; unite (often followed by up): The new bridge will link the island to the mainland. The company will soon link up with a hotel chain.
Computers. to create links in or to a Web page or electronic document: The page is linked to my online store. to have links to a Web page or electronic document: The essay links to three of my published articles.