Definition of: cluster

(klus′tər) noun
1. A group or bunch, as of grapes.
2. A group of bombs dropped simultaneously.
3. An assembly; congregation.
4. In pyrotechnic illumination, a group of stars burning at the same time.
—v.t.
1. To bring forth in or collect into clusters.
2. To provide with clusters.
—v.i.
3. To grow in clusters, as grapes.
4. To gather in a cluster or clusters. [OE clyster]
—clus′tered adjective
—clus′ter·y adjective