"Laniakea" from the Hawaiian: 'lani' - sky, heaven' and 'akea' - broad, wide, spacious, immeasurable.
Many thanks to: R Brent Tully, Helene Courtois, Yehuda Hoffman and Daniel Pomarede who wrote the paper "The Laniakea supercluster of galaxies".
See:
http://www.nature.com/nature/journal/v513/n7516/full/nature13674.html
I'm sure most people know our planet revolves around the Sun and the Sun sits in the The Milky Way, which is a is a member of the Local Group of galaxies.
Now have sufficient data on the distances and motions of galaxies to be able to describe a much larger level of organization in our corner of the Universe — a supercluster 160 megaparsecs across and containing 1017 solar masses.
Brent Tully et al. use a new catalogue of 'peculiar velocities', line-of-sight departures from cosmic expansion caused by gravitational perturbation, to develop a map representing the distribution of matter. They identify a 'home' supercluster that they name Laniakea — from the Hawaiian lani and akea ('heaven' and 'spacious'). It includes the Virgo cluster, the Norma, Hydra and Centaurus clusters (also known as the Great Attractor), the Pavo-Indus filament and a number of voids.
This is the related video to that paper. Apparently, we appear to be 'somewhere in the suburbs'......