(v. t.) To draw or bring to a center point; to gather into or about a center; to bring into one system, or under one control.

affiliate ally approach associate band together be in cahoots bunch bunch up cabal cement a union center center on center round close close in close up close with club club together come together concenter concentralize concentrate confederate consociate conspire converge couple fall in with federalize federate funnel gang gang up go in partners go in partnership hook up with intersect join forces join fortunes with join together join up with join with league marry meet middle narrow the gap nip organize pair pair off partner pinch run together stand together stand up with taper team up with team with throw in with tie in with tie up with unionize unite unite with wed