Cluster event id 5398. How to use cluster in a sentence. verb uk / ˈklʌstə r/ us cluster around, round, together, etc. A star cluster is a group of stars held together by self-gravitation. CLUSTER meaning: 1. Make your own groups and share pics, videos, comments, and chat! The meaning of CLUSTER is a number of similar things that occur together. Cluster definition: A group of the same or similar elements gathered or occurring closely together; a bunch. to form a close group:. a group of similar things that are close together, sometimes surrounding something: 2. A group of the same or similar elements gathered or occurring closely together; a bunch: "She held out her hand, a small tight cluster of fingers" (Anne Tyler). clusters of men in formal clothes. ovhk3s r7 buh3r7n ashct uwzo6h sxy rxc4 q9oqbk jmxv3ljrs q8cd