Cluster

n.	1.	A number of things of the same kind growing together; a bunch. Her deeds were like great clusters of ripe grapes, Which load the bunches of the fruitful vine. - Spenser.
	2.	A number of similar things collected together or lying contiguous; a group; as, a cluster of islands.
	3.	A number of individuals grouped together or collected in one place; a crowd; a mob. As bees . . . Pour forth their populous youth about the hive In clusters. - Milton. We loved him; but, like beasts And cowardly nobles, gave way unto your clusters, Who did hoot him out o' the city. - Shak.
v. i.	1.	To grow in clusters or assemble in groups; to gather or unite in a cluster or clusters. [imp. & p. p. Clustered ; p. pr. & vb. n. Clustering.] His sunny hair Cluster'd about his temples, like a god's. - Tennyson. The princes of the country clustering together. - Foxe.
v. t.	1.	To collect into a cluster or clusters; to gather into a bunch or close body. Not less the bee would range her cells, . . . The foxglove cluster dappled bells. - Tennyson. Or from the forest falls the clustered snow. - Thomson. Clustered column (Arch.) a column which is composed, or appears to be composed, of several columns collected together.

Noun	1.	cluster - a grouping of a number of similar things; "a bunch of trees"; "a cluster of admirers" Synonyms: bunch, clump, clustering
Verb	1.	cluster - come together as in a cluster or flock; "The poets constellate in this town every summer" Synonyms: clump, constellate, flock
	2.	cluster - gather or cause to gather into a cluster; "She bunched her fingers into a fist"; "The students bunched up at the registration desk" Synonyms: bunch, bunch up, bundle, clump

(file system)

cluster - An elementary unit of allocation of a disk made up of one or more physical blocks. A file is made up of a whole number of possibly non-contiguous clusters. The cluster size is a tradeoff between space efficiency (the bigger is the cluster, the bigger is on the average the wasted space at the end of each file) and the length of the FAT.

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