<p><strong>Noun</strong></p><ul><li>a number of things of the same kind, growing or held together; a bunch: a cluster of grapes</li><li>a group of things or persons close together: There was a cluster of tourists at the gate</li><li>a small metal design placed on a ribbon representing an awarded medal to indicate that the same medal has been awarded again: oak-leaf cluster</li><li>a succession of two or more contiguous consonants in an utterance, as the str-cluster of strap</li><li>a group of neighboring stars, held together by mutual gravitation, that have essentially the same age and composition and thus supposedly a common origin</li></ul><p><strong>Verb</strong></p><ul><li>to gather into a cluster or clusters</li><li>to furnish or cover with clusters</li><li>to form a cluster or clusters: The people clustered around to watch</li></ul>