a company of persons or, sometimes, animals or things, joined, acting, or functioning together; aggregation; party; troop

a band of protesters.

Music .

a group of instrumentalists playing music of a specialized type

rock band; calypso band; mariachi band.

a musical group, usually employing brass, percussion, and often woodwind instruments, that plays esp. for marching or open-air performances.

big band.

dance band.

a division of a nomadic tribe; a group of individuals who move and camp together and subsist by hunting and gathering.

a group of persons living outside the law

a renegade band.

to unite in a troop, company, or confederacy.

to unite; confederate (often fol. by together )

They banded together to oust the chairman.

to beat the band

Informal . energetically; abundantly

It rained all day to beat the band.

noun

bandage , bandeau , belt , binding , bond , braid , cable , chain , circle , circuit , copula , cord , fillet , harness , hoop , ligature , line , link , manacle , ribbon , ring , rope , sash , scarf , shackle , snood , stay , strap , string , strip , tape , tie , truss , assembly , association , bevy , body , bunch , clique , club , cluster , collection , company , corps , coterie , covey , crew , gang , gathering , horde , menagerie , outfit , party , society , troop , troupe , combo , ensemble , orchestra , philharmonic , symphony , stripe , disk , gyre , wheel , array , batch , bundle , clump , clutch , knot , lot , set , pack

verb

affiliate , ally , amalgamate , belt , coadjute , combine , conjoin , consolidate , federate , gather , league , merge , team , unite , begird , cincture , compass , encompass , engirdle , gird , girdle , girt , ring , gang up , aggregate , bevy , bunch , bundle , clique , collection , combo , company , confederate , crew , gang , garland , group , orchestra , outfit , pack , posse , set , symphony , troop