[计] 分类归并; 聚类

[ noun ]
a grouping of a number of similar things
<noun.group>
a bunch of treesa cluster of admirers

Cluster \Clus"ter\, v. i. [imp. & p. p. {Clustered}; p. pr. &
vb. n. {Clustering}.]
To grow in clusters or assemble in groups; to gather or unite
in a cluster or clusters.

His sunny hair
Cluster'd about his temples, like a god's. --Tennyson.

The princes of the country clustering together. --Foxe.