Definition of link-up:
(n) :
A connection between places, people, events, things, or ideas.
(n) :
One element of a chain or other connected series.
(n) :
(computing) The connection between buses or systems.
(n) :
(mathematics) A space comprising one or more disjoint knots.
(n) :
(Sussex) A thin wild bank of land splitting two cultivated patches and often linking two hills.
(n) :
(figurative) An individual person or element in a system