cluster

IPA: kɫˈʌstɝ

A bunch or group of several discrete items that are close to each other.
(astronomy) A group of galaxies, nebulae, or stars that appear to the naked eye to be near each other.
(chemistry) An ensemble of bound atoms (especially of a metal) or molecules, intermediate in size between a molecule and a bulk solid.
(computing)
A group of computers that work together.
A logical data storage unit containing one or more physical sectors (see block (noun)).
(epidemiology) A group of cases of the same disease occurring around the same place or time.
(linguistics) Synonym of lexical bundle (“a sequence of two or more words that occur in a language with high frequency but are not idiomatic”)
(military)
A set of bombs or mines released as part of the same blast.
(US) In full oak leaf cluster: a small bronze or silver device shaped like a twig of oak leaves and acorns which is worn on a ribbon to indicate that the wearer has been conferred the same award or decoration before; an oakleaf.
(music) A secundal chord of three or more notes.
(phonetics) A pronounceable group of consonants that occur together.
(statistics) In cluster analysis: a subset of a population whose members are sufficiently similar to each other and distinct from others as to be considered a separate group; also, such a grouping in a set of observed data that is statistically significant.
A number of individuals (animals or people) collected in one place or grouped together; a crowd, a mob, a swarm.

(transitive, chiefly passive voice)
To collect (animals, people, or objects) into clusters (noun sense 1).
To cover (with clusters); to scatter or strew in clusters (within); to distribute (objects) within such that they form clusters.
(intransitive)
To form a cluster or group; to assemble, to gather.

Examples of "cluster" in Sentences

This cluster is the fourth largest, with 16.4 million people in 105 groups.
Undoubtedly each of these small stars that form the cluster is a great sun.
For some people, parallel computing and the need for a cluster is a way of life.
Typically the collection of nodes maybe known as a cluster (though the term cluster is often misused)
The FIRE cluster is dead in Seattle (Russell isn't enough) with the death of WAMU, Safeco, and others.
Divers, however, did locate what they describe as a cluster of vehicles under water, and recovery efforts today are expected to go slowly.
There are words or terms for such a thing already: chaos, anarchy or something else that begins with the word "cluster" and ends in an expletive that I can't really say in writing.
And that's not to scare people, but what might happen is if people start to what we call cluster a few days from now with some sort of respiratory illness or some sort of rash, you might have a sense then that a bioterror weapon of some sort was released.