THESAURUS
gutter
aqueduct, beat, beneath one, bicker, broad, canal, canalization, channel, cheap, chute, cloaca, cloaca maxima, coarse, crimp, cut, dance, debasing, degrading, demeaning, deplorable, dike, disgraceful, ditch, drain, earthy, eaves trough, entrenchment, flap, flick, flicker, flip, flit, flitter, flop, flutter, fosse, frank, go pitapat, goffer, gross, guide, ha-ha, headchute, humiliating, humiliative, infra dig, infra indignitatem, kennel, low, moat, opprobrious, outrageous, palpitate, penstock, pentrough, piscina, pitiful, pitter-patter, pleat, pulse, rank, raw, sad, scandalous, scupper, sewer, shameful, shocking, shoot, sink, slat, sluice, sorry, sough, splutter, sputter, sump, sunk fence, throb, too bad, trench, trough, unbecoming, uncouth, unworthy of one, vulgar, wave, waver
ROGET THESAURUS
gutter
Furrow
N
furrow, groove, rut, sulcus, scratch, streak, striae, crack, score, incision, slit, chamfer, fluting, corduroy road, cradle hole, channel,
gutter, trench, ditch, dike, dyke, moat, fosse, trough, kennel, ravine, tajo, thank-ye-ma'am, furrowed, ribbed, striated, sulcated, fluted, canaliculated, bisulcous, bisulcate, bisulcated, canaliferous, trisulcate, corduroy, unisulcate, costate, rimiform.
Conduit
N
conduit, channel, duct, watercourse, race, head race, tail race, abito, aboideau, aboiteau, bito, acequia, acequiador, acequiamadre, arroyo, adit, aqueduct, canal, trough,
gutter, pantile, flume, ingate, runner, lock-weir, tedge, vena, dike, main, gully, moat, ditch, drain, sewer, culvert, cloaca, sough, kennel, siphon, piscina, pipe, funnel, tunnel, water pipe, waste pipe, emunctory, gully hole, artery, aorta, pore, spout, scupper, adjutage, ajutage, hose, gargoyle, gurgoyle, penstock, weir, flood gate, water gate, sluice, lock, valve, rose, waterworks, pipeline, vascular.