chain

chain reaction

belt, circle, cycle, vicious circle (also vicious cycle)

continuum, gamut, gauntlet (also gantlet), scale, spectrum

flow, river, stream

file, line, queue, range, row, succession

catch, hitch, rub, snag

barrier, blockade, blockage, brick wall, stone wall

arrest, bit, brake, check, constraint, curb, hobble, rein, restraint

embargo, stoppage

delay, holdup, stall

burden, cumber, load

danger, hazard, peril, reef

adversity, difficulty, disadvantage, drawback, hardship

captivity, confinement, constraint, curb, enchainment, enslavement, hindrance, immurement, imprisonment, incarceration, restraint, restriction

entanglement, net, trammel, trap

collar, straitjacket (also straightjacket)

fastener, hobble, hold, hold-down, holding, tie

bit, hobble, hog-tie, iron, lash, secure, tie, truss

attach, fasten, join, link

confine, constrain, curb, hamper, hinder, impede

limit, restrict

entangle, tangle

articulate, dovetail, integrate, interlock, intermesh

cord, string, wire

cement, coalesce, combine, fuse, unite, weld