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.
   
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         His sunny hair
         Cluster'd about his temples, like a god's. --Tennyson.
   
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         The princes of the country clustering together. --Foxe.
   
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