cluster

A bunch or group of several discrete items that are close to each other.

A group of galaxies, nebulae, or stars that appear to the naked eye to be near each other.

An ensemble of bound atoms (especially of a metal) or molecules, intermediate in size between a molecule and a bulk solid.

A group of computers that work together.

A logical data storage unit containing one or more physical sectors (see block (noun)).

A group of cases of the same disease occurring around the same place or time.

A set of bombs or mines released as part of the same blast.

A secundal chord of three or more notes.

A pronounceable group of consonants that occur together: a consonant cluster.

In cluster analysis: a subset of a population whose members are similar enough 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.

Synonym of lexical bundle (“a sequence of two or more words that occur in a language with high frequency but are not idiomatic”).

(slang, euphemistic) Euphemistic form of clusterfuck (“a chaotic situation where everything seems to go wrong”).

(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.

To collect (animals, people, objects, data points, etc) into clusters.

To form a cluster or group; to assemble, to gather.

To cover (with clusters); to scatter or strew in clusters (within); to distribute (objects) within such that they form clusters.