1. (n.) A number of things of the same kind growing together; a bunch.

2. (n.) A number of similar things collected together or lying contiguous; a group; as, a cluster of islands.

3. (n.) A number of individuals grouped together or collected in one place; a crowd; a mob.

4. (v. i.) To grow in clusters or assemble in groups; to gather or unite in a cluster or clusters.

5. (v. t.) To collect into a cluster or clusters; to gather into a bunch or close body.

accumulate adhere agglomerate agglomeration aggregate aggroup amass army array assemblage assemble assembly associate band batch bevy block body breccia bring together bulk bunch bunch together bunch up bundle cake clabber clasp cleave clinch cling cling to clot clump clutch coagulate cohere cohue collect collection colligate collocate combine come together company compare compile concrete concretion congeal conglomerate conglomeration congregate congregation converge copse copulate corral couple covey crew crop crowd crush cumulate curd curdle date deluge dig up draw together dredge up drive together embrace flock flock together flood flow together forgather freeze to fuse galaxy gang around gang up gather gather around gather in gather together gathering gel gelatinate gelatinize get in get together grasp group grouping groupment grove grow together hang on hang together hassock heap herd together hive hold hold on hold together horde host huddle hug incrassate inspissate jam jell jellify jelly join juxtapose knot league legion link lopper lot lump lump together make up mass match meet merge mess mill mob mobilize multitude muster node package pair panoply parcel partner party persist press put together rabble raise rake up rally rally around rendezvous round up rout ruck scrape together seethe set shock slew solid solid body solidify spate stay stay put stick stick together stook stream surge swarm take hold of take up thick thicken thicket throng tuft tussock unite whip in wisp