(Internet) A HTML hypertext link that points to a webpage or website that is permanently unavailable.

(telecommunications) In radio communications, the link from a fixed location (e.g., a base station) to a mobile user. If the link includes a communications relay satellite, the forward link will consist of both an uplink (base station to satellite) and a downlink (satellite to mobile user).

(telecommunications) In radio communications, the link from a mobile user to a fixed base station. If the link includes a communications relay satellite, the reverse link will consist of both an uplink (mobile station to satellite) and a downlink (satellite to base station).

(Internet) An element of text on a web page, used to access other web pages.

The practice of embedding a large number of hyperlinks on a website in exchange for return links, intended to inflate the apparent popularity of the website.

(Internet, informal, derogatory) The practice of going out of one's way to place links to one's website on someone else's web page.

(computing) A website containing many hyperlinks, especially one designed to increase the index ranking of other websites to search engines.

(chemistry) A covalent bond (or series of bonds) between adjacent chains of a polymer / (biochemistry) A similar bond between strands of nucleic acid

(chemistry) To join polymer chains together to form one single molecule. An object made from a crosslinked material contains only one supergiant molecule. Crosslinking may take place through covalent bonds or ionic bonds

Copula, copulative verb.