(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).

(topology) A link with a standard projection comprising several tangles, each a braid on two strands, with the tangles arranged in some cyclic order.

(historical) A boy employed to carry a torch or other light at night to help people navigate through the streets.

(Internet, Wiktionary and WMF jargon) A red hyperlink that directs to a nonexistent page of a wiki.

(SEO) Links added to a web page for the purpose of spamdexing.

Alternative spelling of cufflink

(computing) A program that links modules together, by resolving calls or references to external names, to form a single executable program

(Internet) A scheme of reciprocal linking whereby two or more websites link to one another to increase traffic.

(Internet) The practice of linking to a specific page or file within a website so as to bypass introductory pages, considered a violation of netiquette.