1. A grouping of a number of similar things
   "a cluster of admirers";
   - bunch, clump, clustering
    
2. (computing) a basic unit of storage on a disk drive, usually occupying one or more sectors
   "The file system used 4KB clusters for efficient storage"
    
3. (computing) a group of linked computers
   "The research facility used a powerful computer cluster for complex simulations";
   - computer cluster
    
4. (astronomy) a group of galaxies or stars that are gravitationally bound
   "The Pleiades is a well-known star cluster visible to the naked eye"

1. Come together as in a cluster or flock
   "The poets cluster in this town every summer";
   - constellate, flock, clump
    
2. Gather or cause to gather into a cluster
   "She clustered her fingers into a fist";
   - bunch, bundle, clump

Derived forms: clusters, clustered, clustering

Type of: agglomeration, assemble, digital computer, foregather [formal], forgather, form, gather, meet

Encyclopedia: Cluster, star