1. cluster - Noun
2. cluster - Verb
A number of things of the same kind growing together; a bunch.
A number of similar things collected together or lying contiguous; a group; as, a cluster of islands.
A number of individuals grouped together or collected in one place; a crowd; a mob.
To grow in clusters or assemble in groups; to gather or unite in a cluster or clusters.
To collect into a cluster or clusters; to gather into a bunch or close body.
Source: Webster's dictionarya bunch of trees Source: Internet
a cluster of admirers Source: Internet
She bunched her fingers into a fist Source: Internet
The poets constellate in this town every summer Source: Internet
1867 In 1867, Peirce's "The Natural Classification of Arguments", hypothetical inference always deals with a cluster of characters (call them P′, P′′, P′′′, etc.) known to occur at least whenever a certain character (M) occurs. Source: Internet
47 Tucanae has an apparent magnitude of 3.9, meaning that it is visible to the naked eye; it is a Shapley class III cluster, which means that it has a clearly defined nucleus. Source: Internet